20667764

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1663}}^1$

素因数の和:1919

約数の個数: 24

約数和(自身を含む): 39137280

約数和(自身を除く): 18469516

約数列:

[1, 2, 4, 13, 26, 52, 239, 478, 956, 1663, 3107, 3326, 6214, 6652, 12428, 21619, 43238, 86476, 397457, 794914, 1589828, 5166941, 10333882, 20667764]

約数ペア:

[(1, 20667764), (2, 10333882), (4, 5166941), (13, 1589828), (26, 794914), (52, 397457), (239, 86476), (478, 43238), (956, 21619), (1663, 12428), (3107, 6652), (3326, 6214)]