55157980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{19841}}^1$

素因数の和:19989

約数の個数: 24

約数和(自身を含む): 116670960

約数和(自身を除く): 61512980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 19841, 39682, 79364, 99205, 198410, 396820, 2757899, 5515798, 11031596, 13789495, 27578990, 55157980]

約数ペア:

[(1, 55157980), (2, 27578990), (4, 13789495), (5, 11031596), (10, 5515798), (20, 2757899), (139, 396820), (278, 198410), (556, 99205), (695, 79364), (1390, 39682), (2780, 19841)]