171557980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{9871}}^1$

素因数の和:9970

約数の個数: 48

約数和(自身を含む): 398039040

約数和(自身を除く): 226481060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1580, 1738, 3476, 4345, 8690, 9871, 17380, 19742, 39484, 49355, 98710, 108581, 197420, 217162, 434324, 542905, 779809, 1085810, 1559618, 2171620, 3119236, 3899045, 7798090, 8577899, 15596180, 17155798, 34311596, 42889495, 85778990, 171557980]

約数ペア:

[(1, 171557980), (2, 85778990), (4, 42889495), (5, 34311596), (10, 17155798), (11, 15596180), (20, 8577899), (22, 7798090), (44, 3899045), (55, 3119236), (79, 2171620), (110, 1559618), (158, 1085810), (220, 779809), (316, 542905), (395, 434324), (790, 217162), (869, 197420), (1580, 108581), (1738, 98710), (3476, 49355), (4345, 39484), (8690, 19742), (9871, 17380)]