21173659

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:534

約数の個数: 16

約数和(自身を含む): 23587200

約数和(自身を除く): 2413541

約数列:

[1, 13, 53, 79, 389, 689, 1027, 4187, 5057, 20617, 30731, 54431, 268021, 399503, 1628743, 21173659]

約数ペア:

[(1, 21173659), (13, 1628743), (53, 399503), (79, 268021), (389, 54431), (689, 30731), (1027, 20617), (4187, 5057)]