21808293

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 32497920

約数和(自身を除く): 10689627

約数列:

[1, 3, 13, 39, 61, 89, 103, 183, 267, 309, 793, 1157, 1339, 2379, 3471, 4017, 5429, 6283, 9167, 16287, 18849, 27501, 70577, 81679, 119171, 211731, 245037, 357513, 559187, 1677561, 7269431, 21808293]

約数ペア:

[(1, 21808293), (3, 7269431), (13, 1677561), (39, 559187), (61, 357513), (89, 245037), (103, 211731), (183, 119171), (267, 81679), (309, 70577), (793, 27501), (1157, 18849), (1339, 16287), (2379, 9167), (3471, 6283), (4017, 5429)]