21376729

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4447}}^1$

素因数の和:4500

約数の個数: 16

約数和(自身を含む): 25620480

約数和(自身を除く): 4243751

約数列:

[1, 11, 19, 23, 209, 253, 437, 4447, 4807, 48917, 84493, 102281, 929423, 1125091, 1943339, 21376729]

約数ペア:

[(1, 21376729), (11, 1943339), (19, 1125091), (23, 929423), (209, 102281), (253, 84493), (437, 48917), (4447, 4807)]