90099990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5531}}^1$

素因数の和:5725

約数の個数: 48

約数和(自身を含む): 235596816

約数和(自身を除く): 145496826

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 181, 362, 543, 905, 1086, 1629, 1810, 2715, 3258, 5430, 5531, 8145, 11062, 16290, 16593, 27655, 33186, 49779, 55310, 82965, 99558, 165930, 248895, 497790, 1001111, 2002222, 3003333, 5005555, 6006666, 9009999, 10011110, 15016665, 18019998, 30033330, 45049995, 90099990]

約数ペア:

[(1, 90099990), (2, 45049995), (3, 30033330), (5, 18019998), (6, 15016665), (9, 10011110), (10, 9009999), (15, 6006666), (18, 5005555), (30, 3003333), (45, 2002222), (90, 1001111), (181, 497790), (362, 248895), (543, 165930), (905, 99558), (1086, 82965), (1629, 55310), (1810, 49779), (2715, 33186), (3258, 27655), (5430, 16593), (5531, 16290), (8145, 11062)]