281342511

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{349}}^1\times {\mathrm{409}}^1$

素因数の和:840

約数の個数: 32

約数和(自身を含む): 424760000

約数和(自身を除く): 143417489

約数列:

[1, 3, 9, 27, 73, 219, 349, 409, 657, 1047, 1227, 1971, 3141, 3681, 9423, 11043, 25477, 29857, 76431, 89571, 142741, 229293, 268713, 428223, 687879, 806139, 1284669, 3854007, 10420093, 31260279, 93780837, 281342511]

約数ペア:

[(1, 281342511), (3, 93780837), (9, 31260279), (27, 10420093), (73, 3854007), (219, 1284669), (349, 806139), (409, 687879), (657, 428223), (1047, 268713), (1227, 229293), (1971, 142741), (3141, 89571), (3681, 76431), (9423, 29857), (11043, 25477)]