20123701820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3359}}^1\times {\mathrm{4219}}^1$

素因数の和:7658

約数の個数: 48

約数和(自身を含む): 42877900800

約数和(自身を除く): 22754198980

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 3359, 4219, 6718, 8438, 13436, 16795, 16876, 21095, 33590, 42190, 67180, 84380, 238489, 299549, 476978, 599098, 953956, 1192445, 1198196, 1497745, 2384890, 2995490, 4769780, 5990980, 14171621, 28343242, 56686484, 70858105, 141716210, 283432420, 1006185091, 2012370182, 4024740364, 5030925455, 10061850910, 20123701820]

約数ペア:

[(1, 20123701820), (2, 10061850910), (4, 5030925455), (5, 4024740364), (10, 2012370182), (20, 1006185091), (71, 283432420), (142, 141716210), (284, 70858105), (355, 56686484), (710, 28343242), (1420, 14171621), (3359, 5990980), (4219, 4769780), (6718, 2995490), (8438, 2384890), (13436, 1497745), (16795, 1198196), (16876, 1192445), (21095, 953956), (33590, 599098), (42190, 476978), (67180, 299549), (84380, 238489)]