21292976

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78283}}^1$

素因数の和:78308

約数の個数: 20

約数和(自身を含む): 43682472

約数和(自身を除く): 22389496

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78283, 156566, 313132, 626264, 1252528, 1330811, 2661622, 5323244, 10646488, 21292976]

約数ペア:

[(1, 21292976), (2, 10646488), (4, 5323244), (8, 2661622), (16, 1330811), (17, 1252528), (34, 626264), (68, 313132), (136, 156566), (272, 78283)]