21815277

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{12473}}^1$

素因数の和:12540

約数の個数: 16

約数和(自身を含む): 32332608

約数和(自身を除く): 10517331

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 12473, 37419, 137203, 411609, 661069, 1983207, 7271759, 21815277]

約数ペア:

[(1, 21815277), (3, 7271759), (11, 1983207), (33, 661069), (53, 411609), (159, 137203), (583, 37419), (1749, 12473)]