18226840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10597}}^1$

素因数の和:10651

約数の個数: 32

約数和(自身を含む): 41968080

約数和(自身を除く): 23741240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10597, 21194, 42388, 52985, 84776, 105970, 211940, 423880, 455671, 911342, 1822684, 2278355, 3645368, 4556710, 9113420, 18226840]

約数ペア:

[(1, 18226840), (2, 9113420), (4, 4556710), (5, 3645368), (8, 2278355), (10, 1822684), (20, 911342), (40, 455671), (43, 423880), (86, 211940), (172, 105970), (215, 84776), (344, 52985), (430, 42388), (860, 21194), (1720, 10597)]