21214207

素因数分解:

$7^3\times {\mathrm{127}}^1\times {\mathrm{487}}^1$

素因数の和:635

約数の個数: 16

約数和(自身を含む): 24985600

約数和(自身を除く): 3771393

約数列:

[1, 7, 49, 127, 343, 487, 889, 3409, 6223, 23863, 43561, 61849, 167041, 432943, 3030601, 21214207]

約数ペア:

[(1, 21214207), (7, 3030601), (49, 432943), (127, 167041), (343, 61849), (487, 43561), (889, 23863), (3409, 6223)]