18387320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{677}}^1$

素因数の和:792

約数の個数: 64

約数和(自身を含む): 47839680

約数和(自身を除く): 29452360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 97, 140, 194, 280, 388, 485, 677, 679, 776, 970, 1354, 1358, 1940, 2708, 2716, 3385, 3395, 3880, 4739, 5416, 5432, 6770, 6790, 9478, 13540, 13580, 18956, 23695, 27080, 27160, 37912, 47390, 65669, 94780, 131338, 189560, 262676, 328345, 459683, 525352, 656690, 919366, 1313380, 1838732, 2298415, 2626760, 3677464, 4596830, 9193660, 18387320]

約数ペア:

[(1, 18387320), (2, 9193660), (4, 4596830), (5, 3677464), (7, 2626760), (8, 2298415), (10, 1838732), (14, 1313380), (20, 919366), (28, 656690), (35, 525352), (40, 459683), (56, 328345), (70, 262676), (97, 189560), (140, 131338), (194, 94780), (280, 65669), (388, 47390), (485, 37912), (677, 27160), (679, 27080), (776, 23695), (970, 18956), (1354, 13580), (1358, 13540), (1940, 9478), (2708, 6790), (2716, 6770), (3385, 5432), (3395, 5416), (3880, 4739)]