21938704

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80657}}^1$

素因数の和:80682

約数の個数: 20

約数和(自身を含む): 45007164

約数和(自身を除く): 23068460

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80657, 161314, 322628, 645256, 1290512, 1371169, 2742338, 5484676, 10969352, 21938704]

約数ペア:

[(1, 21938704), (2, 10969352), (4, 5484676), (8, 2742338), (16, 1371169), (17, 1290512), (34, 645256), (68, 322628), (136, 161314), (272, 80657)]