21499023

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1291}}^1$

素因数の和:1375

約数の個数: 32

約数和(自身を含む): 35886592

約数和(自身を除く): 14387569

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 183, 273, 427, 793, 1281, 1291, 2379, 3873, 5551, 9037, 16653, 16783, 27111, 50349, 78751, 117481, 236253, 352443, 551257, 1023763, 1653771, 3071289, 7166341, 21499023]

約数ペア:

[(1, 21499023), (3, 7166341), (7, 3071289), (13, 1653771), (21, 1023763), (39, 551257), (61, 352443), (91, 236253), (183, 117481), (273, 78751), (427, 50349), (793, 27111), (1281, 16783), (1291, 16653), (2379, 9037), (3873, 5551)]