21786869

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:476

約数の個数: 16

約数和(自身を含む): 24216192

約数和(自身を除く): 2429323

約数列:

[1, 13, 53, 103, 307, 689, 1339, 3991, 5459, 16271, 31621, 70967, 211523, 411073, 1675913, 21786869]

約数ペア:

[(1, 21786869), (13, 1675913), (53, 411073), (103, 211523), (307, 70967), (689, 31621), (1339, 16271), (3991, 5459)]