21725978

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{2521}}^1$

素因数の和:2693

約数の個数: 16

約数和(自身を含む): 33895680

約数和(自身を除く): 12169702

約数列:

[1, 2, 31, 62, 139, 278, 2521, 4309, 5042, 8618, 78151, 156302, 350419, 700838, 10862989, 21725978]

約数ペア:

[(1, 21725978), (2, 10862989), (31, 700838), (62, 350419), (139, 156302), (278, 78151), (2521, 8618), (4309, 5042)]