2197889780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1801549}}^1$

素因数の和:1801619

約数の個数: 24

約数和(自身を含む): 4691236200

約数和(自身を除く): 2493346420

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 1801549, 3603098, 7206196, 9007745, 18015490, 36030980, 109894489, 219788978, 439577956, 549472445, 1098944890, 2197889780]

約数ペア:

[(1, 2197889780), (2, 1098944890), (4, 549472445), (5, 439577956), (10, 219788978), (20, 109894489), (61, 36030980), (122, 18015490), (244, 9007745), (305, 7206196), (610, 3603098), (1220, 1801549)]