1405945040

素因数分解:

$2^4\times 5^1\times {\mathrm{17574313}}^1$

素因数の和:17574326

約数の個数: 20

約数和(自身を含む): 3268822404

約数和(自身を除く): 1862877364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 17574313, 35148626, 70297252, 87871565, 140594504, 175743130, 281189008, 351486260, 702972520, 1405945040]

約数ペア:

[(1, 1405945040), (2, 702972520), (4, 351486260), (5, 281189008), (8, 175743130), (10, 140594504), (16, 87871565), (20, 70297252), (40, 35148626), (80, 17574313)]