20328480

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{743}}^1$

素因数の和:783

約数の個数: 144

約数和(自身を含む): 73120320

約数和(自身を除く): 52791840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 32, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 96, 114, 120, 144, 152, 160, 171, 180, 190, 228, 240, 285, 288, 304, 342, 360, 380, 456, 480, 570, 608, 684, 720, 743, 760, 855, 912, 1140, 1368, 1440, 1486, 1520, 1710, 1824, 2229, 2280, 2736, 2972, 3040, 3420, 3715, 4458, 4560, 5472, 5944, 6687, 6840, 7430, 8916, 9120, 11145, 11888, 13374, 13680, 14117, 14860, 17832, 22290, 23776, 26748, 27360, 28234, 29720, 33435, 35664, 42351, 44580, 53496, 56468, 59440, 66870, 70585, 71328, 84702, 89160, 106992, 112936, 118880, 127053, 133740, 141170, 169404, 178320, 211755, 213984, 225872, 254106, 267480, 282340, 338808, 356640, 423510, 451744, 508212, 534960, 564680, 635265, 677616, 847020, 1016424, 1069920, 1129360, 1270530, 1355232, 1694040, 2032848, 2258720, 2541060, 3388080, 4065696, 5082120, 6776160, 10164240, 20328480]

約数ペア:

[(1, 20328480), (2, 10164240), (3, 6776160), (4, 5082120), (5, 4065696), (6, 3388080), (8, 2541060), (9, 2258720), (10, 2032848), (12, 1694040), (15, 1355232), (16, 1270530), (18, 1129360), (19, 1069920), (20, 1016424), (24, 847020), (30, 677616), (32, 635265), (36, 564680), (38, 534960), (40, 508212), (45, 451744), (48, 423510), (57, 356640), (60, 338808), (72, 282340), (76, 267480), (80, 254106), (90, 225872), (95, 213984), (96, 211755), (114, 178320), (120, 169404), (144, 141170), (152, 133740), (160, 127053), (171, 118880), (180, 112936), (190, 106992), (228, 89160), (240, 84702), (285, 71328), (288, 70585), (304, 66870), (342, 59440), (360, 56468), (380, 53496), (456, 44580), (480, 42351), (570, 35664), (608, 33435), (684, 29720), (720, 28234), (743, 27360), (760, 26748), (855, 23776), (912, 22290), (1140, 17832), (1368, 14860), (1440, 14117), (1486, 13680), (1520, 13374), (1710, 11888), (1824, 11145), (2229, 9120), (2280, 8916), (2736, 7430), (2972, 6840), (3040, 6687), (3420, 5944), (3715, 5472), (4458, 4560)]