28745560

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{2267}}^1$

素因数の和:2595

約数の個数: 32

約数和(自身を含む): 64910160

約数和(自身を除く): 36164600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 2267, 2536, 3170, 4534, 6340, 9068, 11335, 12680, 18136, 22670, 45340, 90680, 718639, 1437278, 2874556, 3593195, 5749112, 7186390, 14372780, 28745560]

約数ペア:

[(1, 28745560), (2, 14372780), (4, 7186390), (5, 5749112), (8, 3593195), (10, 2874556), (20, 1437278), (40, 718639), (317, 90680), (634, 45340), (1268, 22670), (1585, 18136), (2267, 12680), (2536, 11335), (3170, 9068), (4534, 6340)]