31408209

素因数分解:

$3^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1213}}^1$

素因数の和:1366

約数の個数: 32

約数和(自身を含む): 53610240

約数和(自身を除く): 22202031

約数列:

[1, 3, 7, 9, 21, 27, 63, 137, 189, 411, 959, 1213, 1233, 2877, 3639, 3699, 8491, 8631, 10917, 25473, 25893, 32751, 76419, 166181, 229257, 498543, 1163267, 1495629, 3489801, 4486887, 10469403, 31408209]

約数ペア:

[(1, 31408209), (3, 10469403), (7, 4486887), (9, 3489801), (21, 1495629), (27, 1163267), (63, 498543), (137, 229257), (189, 166181), (411, 76419), (959, 32751), (1213, 25893), (1233, 25473), (2877, 10917), (3639, 8631), (3699, 8491)]