78837620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{64621}}^1$

素因数の和:64691

約数の個数: 24

約数和(自身を含む): 168275688

約数和(自身を除く): 89438068

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 64621, 129242, 258484, 323105, 646210, 1292420, 3941881, 7883762, 15767524, 19709405, 39418810, 78837620]

約数ペア:

[(1, 78837620), (2, 39418810), (4, 19709405), (5, 15767524), (10, 7883762), (20, 3941881), (61, 1292420), (122, 646210), (244, 323105), (305, 258484), (610, 129242), (1220, 64621)]