88989890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{2879}}^1$

素因数の和:3178

約数の個数: 32

約数和(自身を含む): 175426560

約数和(自身を除く): 86436670

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 281, 562, 1405, 2810, 2879, 3091, 5758, 6182, 14395, 15455, 28790, 30910, 31669, 63338, 158345, 316690, 808999, 1617998, 4044995, 8089990, 8898989, 17797978, 44494945, 88989890]

約数ペア:

[(1, 88989890), (2, 44494945), (5, 17797978), (10, 8898989), (11, 8089990), (22, 4044995), (55, 1617998), (110, 808999), (281, 316690), (562, 158345), (1405, 63338), (2810, 31669), (2879, 30910), (3091, 28790), (5758, 15455), (6182, 14395)]