87721137

素因数分解:

$3^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1181}}^1$

素因数の和:1331

約数の個数: 40

約数和(自身を含む): 151031232

約数和(自身を除く): 63310095

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 131, 189, 393, 567, 917, 1179, 1181, 2751, 3537, 3543, 8253, 8267, 10611, 10629, 24759, 24801, 31887, 74277, 74403, 95661, 154711, 223209, 464133, 669627, 1082977, 1392399, 3248931, 4177197, 9746793, 12531591, 29240379, 87721137]

約数ペア:

[(1, 87721137), (3, 29240379), (7, 12531591), (9, 9746793), (21, 4177197), (27, 3248931), (63, 1392399), (81, 1082977), (131, 669627), (189, 464133), (393, 223209), (567, 154711), (917, 95661), (1179, 74403), (1181, 74277), (2751, 31887), (3537, 24801), (3543, 24759), (8253, 10629), (8267, 10611)]