155920009

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{857}}^1$

素因数の和:997

約数の個数: 24

約数和(自身を含む): 187799040

約数和(自身を除く): 31879031

約数列:

[1, 7, 47, 49, 79, 329, 553, 857, 2303, 3713, 3871, 5999, 25991, 40279, 41993, 67703, 181937, 281953, 473921, 1973671, 3182041, 3317447, 22274287, 155920009]

約数ペア:

[(1, 155920009), (7, 22274287), (47, 3317447), (49, 3182041), (79, 1973671), (329, 473921), (553, 281953), (857, 181937), (2303, 67703), (3713, 41993), (3871, 40279), (5999, 25991)]