21358885

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{4259}}^1$

素因数の和:4340

約数の個数: 16

約数和(自身を含む): 27604800

約数和(自身を除く): 6245915

約数列:

[1, 5, 17, 59, 85, 295, 1003, 4259, 5015, 21295, 72403, 251281, 362015, 1256405, 4271777, 21358885]

約数ペア:

[(1, 21358885), (5, 4271777), (17, 1256405), (59, 362015), (85, 251281), (295, 72403), (1003, 21295), (4259, 5015)]