31381920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:108

約数の個数: 288

約数和(自身を含む): 119508480

約数和(自身を除く): 88126560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 31, 32, 36, 37, 38, 40, 45, 48, 57, 60, 62, 72, 74, 76, 80, 90, 93, 95, 96, 111, 114, 120, 124, 144, 148, 152, 155, 160, 171, 180, 185, 186, 190, 222, 228, 240, 248, 279, 285, 288, 296, 304, 310, 333, 342, 360, 370, 372, 380, 444, 456, 465, 480, 496, 555, 558, 570, 589, 592, 608, 620, 666, 684, 703, 720, 740, 744, 760, 855, 888, 912, 930, 992, 1110, 1116, 1140, 1147, 1178, 1184, 1240, 1332, 1368, 1395, 1406, 1440, 1480, 1488, 1520, 1665, 1710, 1767, 1776, 1824, 1860, 2109, 2220, 2232, 2280, 2294, 2356, 2480, 2664, 2736, 2790, 2812, 2945, 2960, 2976, 3040, 3330, 3420, 3441, 3515, 3534, 3552, 3720, 4218, 4440, 4464, 4560, 4588, 4712, 4960, 5301, 5328, 5472, 5580, 5624, 5735, 5890, 5920, 6327, 6660, 6840, 6882, 7030, 7068, 7440, 8436, 8835, 8880, 8928, 9120, 9176, 9424, 10323, 10545, 10602, 10656, 11160, 11248, 11470, 11780, 12654, 13320, 13680, 13764, 14060, 14136, 14880, 16872, 17205, 17670, 17760, 18352, 18848, 20646, 21090, 21204, 21793, 22320, 22496, 22940, 23560, 25308, 26505, 26640, 27360, 27528, 28120, 28272, 31635, 33744, 34410, 35340, 36704, 41292, 42180, 42408, 43586, 44640, 45880, 47120, 50616, 51615, 53010, 53280, 55056, 56240, 56544, 63270, 65379, 67488, 68820, 70680, 82584, 84360, 84816, 87172, 91760, 94240, 101232, 103230, 106020, 108965, 110112, 112480, 126540, 130758, 137640, 141360, 165168, 168720, 169632, 174344, 183520, 196137, 202464, 206460, 212040, 217930, 253080, 261516, 275280, 282720, 326895, 330336, 337440, 348688, 392274, 412920, 424080, 435860, 506160, 523032, 550560, 653790, 697376, 784548, 825840, 848160, 871720, 980685, 1012320, 1046064, 1307580, 1569096, 1651680, 1743440, 1961370, 2092128, 2615160, 3138192, 3486880, 3922740, 5230320, 6276384, 7845480, 10460640, 15690960, 31381920]

約数ペア:

[(1, 31381920), (2, 15690960), (3, 10460640), (4, 7845480), (5, 6276384), (6, 5230320), (8, 3922740), (9, 3486880), (10, 3138192), (12, 2615160), (15, 2092128), (16, 1961370), (18, 1743440), (19, 1651680), (20, 1569096), (24, 1307580), (30, 1046064), (31, 1012320), (32, 980685), (36, 871720), (37, 848160), (38, 825840), (40, 784548), (45, 697376), (48, 653790), (57, 550560), (60, 523032), (62, 506160), (72, 435860), (74, 424080), (76, 412920), (80, 392274), (90, 348688), (93, 337440), (95, 330336), (96, 326895), (111, 282720), (114, 275280), (120, 261516), (124, 253080), (144, 217930), (148, 212040), (152, 206460), (155, 202464), (160, 196137), (171, 183520), (180, 174344), (185, 169632), (186, 168720), (190, 165168), (222, 141360), (228, 137640), (240, 130758), (248, 126540), (279, 112480), (285, 110112), (288, 108965), (296, 106020), (304, 103230), (310, 101232), (333, 94240), (342, 91760), (360, 87172), (370, 84816), (372, 84360), (380, 82584), (444, 70680), (456, 68820), (465, 67488), (480, 65379), (496, 63270), (555, 56544), (558, 56240), (570, 55056), (589, 53280), (592, 53010), (608, 51615), (620, 50616), (666, 47120), (684, 45880), (703, 44640), (720, 43586), (740, 42408), (744, 42180), (760, 41292), (855, 36704), (888, 35340), (912, 34410), (930, 33744), (992, 31635), (1110, 28272), (1116, 28120), (1140, 27528), (1147, 27360), (1178, 26640), (1184, 26505), (1240, 25308), (1332, 23560), (1368, 22940), (1395, 22496), (1406, 22320), (1440, 21793), (1480, 21204), (1488, 21090), (1520, 20646), (1665, 18848), (1710, 18352), (1767, 17760), (1776, 17670), (1824, 17205), (1860, 16872), (2109, 14880), (2220, 14136), (2232, 14060), (2280, 13764), (2294, 13680), (2356, 13320), (2480, 12654), (2664, 11780), (2736, 11470), (2790, 11248), (2812, 11160), (2945, 10656), (2960, 10602), (2976, 10545), (3040, 10323), (3330, 9424), (3420, 9176), (3441, 9120), (3515, 8928), (3534, 8880), (3552, 8835), (3720, 8436), (4218, 7440), (4440, 7068), (4464, 7030), (4560, 6882), (4588, 6840), (4712, 6660), (4960, 6327), (5301, 5920), (5328, 5890), (5472, 5735), (5580, 5624)]