989995610

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1\times {\mathrm{2791}}^1$

素因数の和:3326

約数の個数: 32

約数和(自身を含む): 1809216000

約数和(自身を除く): 819220390

約数列:

[1, 2, 5, 10, 79, 158, 395, 449, 790, 898, 2245, 2791, 4490, 5582, 13955, 27910, 35471, 70942, 177355, 220489, 354710, 440978, 1102445, 1253159, 2204890, 2506318, 6265795, 12531590, 98999561, 197999122, 494997805, 989995610]

約数ペア:

[(1, 989995610), (2, 494997805), (5, 197999122), (10, 98999561), (79, 12531590), (158, 6265795), (395, 2506318), (449, 2204890), (790, 1253159), (898, 1102445), (2245, 440978), (2791, 354710), (4490, 220489), (5582, 177355), (13955, 70942), (27910, 35471)]