18727920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2$

素因数の和:112

約数の個数: 180

約数和(自身を含む): 68042520

約数和(自身を除く): 49314600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 37, 38, 40, 45, 48, 57, 60, 72, 74, 76, 80, 90, 95, 111, 114, 120, 144, 148, 152, 171, 180, 185, 190, 222, 228, 240, 285, 296, 304, 333, 342, 360, 370, 380, 444, 456, 555, 570, 592, 666, 684, 703, 720, 740, 760, 855, 888, 912, 1110, 1140, 1332, 1368, 1369, 1406, 1480, 1520, 1665, 1710, 1776, 2109, 2220, 2280, 2664, 2736, 2738, 2812, 2960, 3330, 3420, 3515, 4107, 4218, 4440, 4560, 5328, 5476, 5624, 6327, 6660, 6840, 6845, 7030, 8214, 8436, 8880, 10545, 10952, 11248, 12321, 12654, 13320, 13680, 13690, 14060, 16428, 16872, 20535, 21090, 21904, 24642, 25308, 26011, 26640, 27380, 28120, 31635, 32856, 33744, 41070, 42180, 49284, 50616, 52022, 54760, 56240, 61605, 63270, 65712, 78033, 82140, 84360, 98568, 101232, 104044, 109520, 123210, 126540, 130055, 156066, 164280, 168720, 197136, 208088, 234099, 246420, 253080, 260110, 312132, 328560, 390165, 416176, 468198, 492840, 506160, 520220, 624264, 780330, 936396, 985680, 1040440, 1170495, 1248528, 1560660, 1872792, 2080880, 2340990, 3121320, 3745584, 4681980, 6242640, 9363960, 18727920]

約数ペア:

[(1, 18727920), (2, 9363960), (3, 6242640), (4, 4681980), (5, 3745584), (6, 3121320), (8, 2340990), (9, 2080880), (10, 1872792), (12, 1560660), (15, 1248528), (16, 1170495), (18, 1040440), (19, 985680), (20, 936396), (24, 780330), (30, 624264), (36, 520220), (37, 506160), (38, 492840), (40, 468198), (45, 416176), (48, 390165), (57, 328560), (60, 312132), (72, 260110), (74, 253080), (76, 246420), (80, 234099), (90, 208088), (95, 197136), (111, 168720), (114, 164280), (120, 156066), (144, 130055), (148, 126540), (152, 123210), (171, 109520), (180, 104044), (185, 101232), (190, 98568), (222, 84360), (228, 82140), (240, 78033), (285, 65712), (296, 63270), (304, 61605), (333, 56240), (342, 54760), (360, 52022), (370, 50616), (380, 49284), (444, 42180), (456, 41070), (555, 33744), (570, 32856), (592, 31635), (666, 28120), (684, 27380), (703, 26640), (720, 26011), (740, 25308), (760, 24642), (855, 21904), (888, 21090), (912, 20535), (1110, 16872), (1140, 16428), (1332, 14060), (1368, 13690), (1369, 13680), (1406, 13320), (1480, 12654), (1520, 12321), (1665, 11248), (1710, 10952), (1776, 10545), (2109, 8880), (2220, 8436), (2280, 8214), (2664, 7030), (2736, 6845), (2738, 6840), (2812, 6660), (2960, 6327), (3330, 5624), (3420, 5476), (3515, 5328), (4107, 4560), (4218, 4440)]