20567240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12541}}^1$

素因数の和:12593

約数の個数: 32

約数和(自身を含む): 47408760

約数和(自身を除く): 26841520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12541, 25082, 50164, 62705, 100328, 125410, 250820, 501640, 514181, 1028362, 2056724, 2570905, 4113448, 5141810, 10283620, 20567240]

約数ペア:

[(1, 20567240), (2, 10283620), (4, 5141810), (5, 4113448), (8, 2570905), (10, 2056724), (20, 1028362), (40, 514181), (41, 501640), (82, 250820), (164, 125410), (205, 100328), (328, 62705), (410, 50164), (820, 25082), (1640, 12541)]