90407720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173861}}^1$

素因数の和:173885

約数の個数: 32

約数和(自身を含む): 219066120

約数和(自身を除く): 128658400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 173861, 347722, 695444, 869305, 1390888, 1738610, 2260193, 3477220, 4520386, 6954440, 9040772, 11300965, 18081544, 22601930, 45203860, 90407720]

約数ペア:

[(1, 90407720), (2, 45203860), (4, 22601930), (5, 18081544), (8, 11300965), (10, 9040772), (13, 6954440), (20, 4520386), (26, 3477220), (40, 2260193), (52, 1738610), (65, 1390888), (104, 869305), (130, 695444), (260, 347722), (520, 173861)]