21163437

素因数分解:

$3^4\times {\mathrm{227}}^1\times {\mathrm{1151}}^1$

素因数の和:1390

約数の個数: 20

約数和(自身を含む): 31781376

約数和(自身を除く): 10617939

約数列:

[1, 3, 9, 27, 81, 227, 681, 1151, 2043, 3453, 6129, 10359, 18387, 31077, 93231, 261277, 783831, 2351493, 7054479, 21163437]

約数ペア:

[(1, 21163437), (3, 7054479), (9, 2351493), (27, 783831), (81, 261277), (227, 93231), (681, 31077), (1151, 18387), (2043, 10359), (3453, 6129)]