1977620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1621}}^1$

素因数の和:1691

約数の個数: 24

約数和(自身を含む): 4223688

約数和(自身を除く): 2246068

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 1621, 3242, 6484, 8105, 16210, 32420, 98881, 197762, 395524, 494405, 988810, 1977620]

約数ペア:

[(1, 1977620), (2, 988810), (4, 494405), (5, 395524), (10, 197762), (20, 98881), (61, 32420), (122, 16210), (244, 8105), (305, 6484), (610, 3242), (1220, 1621)]