21587907

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{12343}}^1$

素因数の和:12410

約数の個数: 16

約数和(自身を含む): 31995648

約数和(自身を除く): 10407741

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 12343, 37029, 135773, 407319, 654179, 1962537, 7195969, 21587907]

約数ペア:

[(1, 21587907), (3, 7195969), (11, 1962537), (33, 654179), (53, 407319), (159, 135773), (583, 37029), (1749, 12343)]