20425960

素因数分解:

$2^3\times 5^1\times {\mathrm{691}}^1\times {\mathrm{739}}^1$

素因数の和:1441

約数の個数: 32

約数和(自身を含む): 46087200

約数和(自身を除く): 25661240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 691, 739, 1382, 1478, 2764, 2956, 3455, 3695, 5528, 5912, 6910, 7390, 13820, 14780, 27640, 29560, 510649, 1021298, 2042596, 2553245, 4085192, 5106490, 10212980, 20425960]

約数ペア:

[(1, 20425960), (2, 10212980), (4, 5106490), (5, 4085192), (8, 2553245), (10, 2042596), (20, 1021298), (40, 510649), (691, 29560), (739, 27640), (1382, 14780), (1478, 13820), (2764, 7390), (2956, 6910), (3455, 5912), (3695, 5528)]