20676890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3001}}^1$

素因数の和:3074

約数の個数: 32

約数和(自身を含む): 40851216

約数和(自身を除く): 20174326

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3001, 3445, 6002, 6890, 15005, 30010, 39013, 78026, 159053, 195065, 318106, 390130, 795265, 1590530, 2067689, 4135378, 10338445, 20676890]

約数ペア:

[(1, 20676890), (2, 10338445), (5, 4135378), (10, 2067689), (13, 1590530), (26, 795265), (53, 390130), (65, 318106), (106, 195065), (130, 159053), (265, 78026), (530, 39013), (689, 30010), (1378, 15005), (3001, 6890), (3445, 6002)]