81645921

素因数分解:

$3^3\times 7^1\times {\mathrm{419}}^1\times {\mathrm{1031}}^1$

素因数の和:1466

約数の個数: 32

約数和(自身を含む): 138700800

約数和(自身を除く): 57054879

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 419, 1031, 1257, 2933, 3093, 3771, 7217, 8799, 9279, 11313, 21651, 26397, 27837, 64953, 79191, 194859, 431989, 1295967, 3023923, 3887901, 9071769, 11663703, 27215307, 81645921]

約数ペア:

[(1, 81645921), (3, 27215307), (7, 11663703), (9, 9071769), (21, 3887901), (27, 3023923), (63, 1295967), (189, 431989), (419, 194859), (1031, 79191), (1257, 64953), (2933, 27837), (3093, 26397), (3771, 21651), (7217, 11313), (8799, 9279)]