81305991

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5387}}^1$

素因数の和:5452

約数の個数: 32

約数和(自身を含む): 132760320

約数和(自身を除く): 51454329

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 351, 387, 559, 1161, 1677, 5031, 5387, 15093, 16161, 48483, 70031, 145449, 210093, 231641, 630279, 694923, 1890837, 2084769, 3011333, 6254307, 9033999, 27101997, 81305991]

約数ペア:

[(1, 81305991), (3, 27101997), (9, 9033999), (13, 6254307), (27, 3011333), (39, 2084769), (43, 1890837), (117, 694923), (129, 630279), (351, 231641), (387, 210093), (559, 145449), (1161, 70031), (1677, 48483), (5031, 16161), (5387, 15093)]