71720780

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{13331}}^1$

素因数の和:13609

約数の個数: 24

約数和(自身を含む): 151184880

約数和(自身を除く): 79464100

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 5380, 13331, 26662, 53324, 66655, 133310, 266620, 3586039, 7172078, 14344156, 17930195, 35860390, 71720780]

約数ペア:

[(1, 71720780), (2, 35860390), (4, 17930195), (5, 14344156), (10, 7172078), (20, 3586039), (269, 266620), (538, 133310), (1076, 66655), (1345, 53324), (2690, 26662), (5380, 13331)]