21198115

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{283}}^1$

素因数の和:570

約数の個数: 16

約数和(自身を含む): 26009856

約数和(自身を除く): 4811741

約数列:

[1, 5, 71, 211, 283, 355, 1055, 1415, 14981, 20093, 59713, 74905, 100465, 298565, 4239623, 21198115]

約数ペア:

[(1, 21198115), (5, 4239623), (71, 298565), (211, 100465), (283, 74905), (355, 59713), (1055, 20093), (1415, 14981)]