21316009

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6481}}^1$

素因数の和:6528

約数の個数: 16

約数和(自身を含む): 26135424

約数和(自身を除く): 4819415

約数列:

[1, 11, 13, 23, 143, 253, 299, 3289, 6481, 71291, 84253, 149063, 926783, 1639693, 1937819, 21316009]

約数ペア:

[(1, 21316009), (11, 1937819), (13, 1639693), (23, 926783), (143, 149063), (253, 84253), (299, 71291), (3289, 6481)]