78822980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{64609}}^1$

素因数の和:64679

約数の個数: 24

約数和(自身を含む): 168244440

約数和(自身を除く): 89421460

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 64609, 129218, 258436, 323045, 646090, 1292180, 3941149, 7882298, 15764596, 19705745, 39411490, 78822980]

約数ペア:

[(1, 78822980), (2, 39411490), (4, 19705745), (5, 15764596), (10, 7882298), (20, 3941149), (61, 1292180), (122, 646090), (244, 323045), (305, 258436), (610, 129218), (1220, 64609)]