872920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 1990800

約数和(自身を除く): 1117880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 157, 278, 314, 556, 628, 695, 785, 1112, 1256, 1390, 1570, 2780, 3140, 5560, 6280, 21823, 43646, 87292, 109115, 174584, 218230, 436460, 872920]

約数ペア:

[(1, 872920), (2, 436460), (4, 218230), (5, 174584), (8, 109115), (10, 87292), (20, 43646), (40, 21823), (139, 6280), (157, 5560), (278, 3140), (314, 2780), (556, 1570), (628, 1390), (695, 1256), (785, 1112)]