21941968

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80669}}^1$

素因数の和:80694

約数の個数: 20

約数和(自身を含む): 45013860

約数和(自身を除く): 23071892

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80669, 161338, 322676, 645352, 1290704, 1371373, 2742746, 5485492, 10970984, 21941968]

約数ペア:

[(1, 21941968), (2, 10970984), (4, 5485492), (8, 2742746), (16, 1371373), (17, 1290704), (34, 645352), (68, 322676), (136, 161338), (272, 80669)]