21471840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:102

約数の個数: 288

約数和(自身を含む): 83655936

約数和(自身を除く): 62184096

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 31, 32, 36, 37, 39, 40, 45, 48, 52, 60, 62, 65, 72, 74, 78, 80, 90, 93, 96, 104, 111, 117, 120, 124, 130, 144, 148, 155, 156, 160, 180, 185, 186, 195, 208, 222, 234, 240, 248, 260, 279, 288, 296, 310, 312, 333, 360, 370, 372, 390, 403, 416, 444, 465, 468, 480, 481, 496, 520, 555, 558, 585, 592, 620, 624, 666, 720, 740, 744, 780, 806, 888, 930, 936, 962, 992, 1040, 1110, 1116, 1147, 1170, 1184, 1209, 1240, 1248, 1332, 1395, 1440, 1443, 1480, 1488, 1560, 1612, 1665, 1776, 1860, 1872, 1924, 2015, 2080, 2220, 2232, 2294, 2340, 2405, 2418, 2480, 2664, 2790, 2886, 2960, 2976, 3120, 3224, 3330, 3441, 3552, 3627, 3720, 3744, 3848, 4030, 4329, 4440, 4464, 4588, 4680, 4810, 4836, 4960, 5328, 5580, 5735, 5772, 5920, 6045, 6240, 6448, 6660, 6882, 7215, 7254, 7440, 7696, 8060, 8658, 8880, 8928, 9176, 9360, 9620, 9672, 10323, 10656, 11160, 11470, 11544, 12090, 12896, 13320, 13764, 14430, 14508, 14880, 14911, 15392, 16120, 17205, 17316, 17760, 18135, 18352, 18720, 19240, 19344, 20646, 21645, 22320, 22940, 23088, 24180, 26640, 27528, 28860, 29016, 29822, 32240, 34410, 34632, 36270, 36704, 38480, 38688, 41292, 43290, 44640, 44733, 45880, 46176, 48360, 51615, 53280, 55056, 57720, 58032, 59644, 64480, 68820, 69264, 72540, 74555, 76960, 82584, 86580, 89466, 91760, 96720, 103230, 110112, 115440, 116064, 119288, 134199, 137640, 138528, 145080, 149110, 165168, 173160, 178932, 183520, 193440, 206460, 223665, 230880, 238576, 268398, 275280, 290160, 298220, 330336, 346320, 357864, 412920, 447330, 477152, 536796, 550560, 580320, 596440, 670995, 692640, 715728, 825840, 894660, 1073592, 1192880, 1341990, 1431456, 1651680, 1789320, 2147184, 2385760, 2683980, 3578640, 4294368, 5367960, 7157280, 10735920, 21471840]

約数ペア:

[(1, 21471840), (2, 10735920), (3, 7157280), (4, 5367960), (5, 4294368), (6, 3578640), (8, 2683980), (9, 2385760), (10, 2147184), (12, 1789320), (13, 1651680), (15, 1431456), (16, 1341990), (18, 1192880), (20, 1073592), (24, 894660), (26, 825840), (30, 715728), (31, 692640), (32, 670995), (36, 596440), (37, 580320), (39, 550560), (40, 536796), (45, 477152), (48, 447330), (52, 412920), (60, 357864), (62, 346320), (65, 330336), (72, 298220), (74, 290160), (78, 275280), (80, 268398), (90, 238576), (93, 230880), (96, 223665), (104, 206460), (111, 193440), (117, 183520), (120, 178932), (124, 173160), (130, 165168), (144, 149110), (148, 145080), (155, 138528), (156, 137640), (160, 134199), (180, 119288), (185, 116064), (186, 115440), (195, 110112), (208, 103230), (222, 96720), (234, 91760), (240, 89466), (248, 86580), (260, 82584), (279, 76960), (288, 74555), (296, 72540), (310, 69264), (312, 68820), (333, 64480), (360, 59644), (370, 58032), (372, 57720), (390, 55056), (403, 53280), (416, 51615), (444, 48360), (465, 46176), (468, 45880), (480, 44733), (481, 44640), (496, 43290), (520, 41292), (555, 38688), (558, 38480), (585, 36704), (592, 36270), (620, 34632), (624, 34410), (666, 32240), (720, 29822), (740, 29016), (744, 28860), (780, 27528), (806, 26640), (888, 24180), (930, 23088), (936, 22940), (962, 22320), (992, 21645), (1040, 20646), (1110, 19344), (1116, 19240), (1147, 18720), (1170, 18352), (1184, 18135), (1209, 17760), (1240, 17316), (1248, 17205), (1332, 16120), (1395, 15392), (1440, 14911), (1443, 14880), (1480, 14508), (1488, 14430), (1560, 13764), (1612, 13320), (1665, 12896), (1776, 12090), (1860, 11544), (1872, 11470), (1924, 11160), (2015, 10656), (2080, 10323), (2220, 9672), (2232, 9620), (2294, 9360), (2340, 9176), (2405, 8928), (2418, 8880), (2480, 8658), (2664, 8060), (2790, 7696), (2886, 7440), (2960, 7254), (2976, 7215), (3120, 6882), (3224, 6660), (3330, 6448), (3441, 6240), (3552, 6045), (3627, 5920), (3720, 5772), (3744, 5735), (3848, 5580), (4030, 5328), (4329, 4960), (4440, 4836), (4464, 4810), (4588, 4680)]