28904680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103231}}^1$

素因数の和:103249

約数の個数: 32

約数和(自身を含む): 74327040

約数和(自身を除く): 45422360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 103231, 206462, 412924, 516155, 722617, 825848, 1032310, 1445234, 2064620, 2890468, 3613085, 4129240, 5780936, 7226170, 14452340, 28904680]

約数ペア:

[(1, 28904680), (2, 14452340), (4, 7226170), (5, 5780936), (7, 4129240), (8, 3613085), (10, 2890468), (14, 2064620), (20, 1445234), (28, 1032310), (35, 825848), (40, 722617), (56, 516155), (70, 412924), (140, 206462), (280, 103231)]