18807880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5167}}^1$

素因数の和:5198

約数の個数: 64

約数和(自身を含む): 52093440

約数和(自身を除く): 33285560

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5167, 10334, 20668, 25835, 36169, 41336, 51670, 67171, 72338, 103340, 134342, 144676, 180845, 206680, 268684, 289352, 335855, 361690, 470197, 537368, 671710, 723380, 940394, 1343420, 1446760, 1880788, 2350985, 2686840, 3761576, 4701970, 9403940, 18807880]

約数ペア:

[(1, 18807880), (2, 9403940), (4, 4701970), (5, 3761576), (7, 2686840), (8, 2350985), (10, 1880788), (13, 1446760), (14, 1343420), (20, 940394), (26, 723380), (28, 671710), (35, 537368), (40, 470197), (52, 361690), (56, 335855), (65, 289352), (70, 268684), (91, 206680), (104, 180845), (130, 144676), (140, 134342), (182, 103340), (260, 72338), (280, 67171), (364, 51670), (455, 41336), (520, 36169), (728, 25835), (910, 20668), (1820, 10334), (3640, 5167)]