21128086

素因数分解:

$2^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{8431}}^1$

素因数の和:8619

約数の個数: 16

約数和(自身を含む): 36426240

約数和(自身を除く): 15298154

約数列:

[1, 2, 7, 14, 179, 358, 1253, 2506, 8431, 16862, 59017, 118034, 1509149, 3018298, 10564043, 21128086]

約数ペア:

[(1, 21128086), (2, 10564043), (7, 3018298), (14, 1509149), (179, 118034), (358, 59017), (1253, 16862), (2506, 8431)]