21147290

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23761}}^1$

素因数の和:23857

約数の個数: 16

約数和(自身を含む): 38494440

約数和(自身を除く): 17347150

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23761, 47522, 118805, 237610, 2114729, 4229458, 10573645, 21147290]

約数ペア:

[(1, 21147290), (2, 10573645), (5, 4229458), (10, 2114729), (89, 237610), (178, 118805), (445, 47522), (890, 23761)]