20622940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79319}}^1$

素因数の和:79341

約数の個数: 24

約数和(自身を含む): 46640160

約数和(自身を除く): 26017220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79319, 158638, 317276, 396595, 793190, 1031147, 1586380, 2062294, 4124588, 5155735, 10311470, 20622940]

約数ペア:

[(1, 20622940), (2, 10311470), (4, 5155735), (5, 4124588), (10, 2062294), (13, 1586380), (20, 1031147), (26, 793190), (52, 396595), (65, 317276), (130, 158638), (260, 79319)]