20451221

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1931}}^1$

素因数の和:2044

約数の個数: 16

約数和(自身を含む): 25038720

約数和(自身を除く): 4587499

約数列:

[1, 7, 17, 89, 119, 623, 1513, 1931, 10591, 13517, 32827, 171859, 229789, 1203013, 2921603, 20451221]

約数ペア:

[(1, 20451221), (7, 2921603), (17, 1203013), (89, 229789), (119, 171859), (623, 32827), (1513, 13517), (1931, 10591)]