21877955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{6521}}^1$

素因数の和:6598

約数の個数: 16

約数和(自身を含む): 29114208

約数和(自身を除く): 7236253

約数列:

[1, 5, 11, 55, 61, 305, 671, 3355, 6521, 32605, 71731, 358655, 397781, 1988905, 4375591, 21877955]

約数ペア:

[(1, 21877955), (5, 4375591), (11, 1988905), (55, 397781), (61, 358655), (305, 71731), (671, 32605), (3355, 6521)]