127531257

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{823}}^1$

素因数の和:1037

約数の個数: 32

約数和(自身を含む): 199974912

約数和(自身を除く): 72443655

約数列:

[1, 3, 7, 21, 47, 141, 157, 329, 471, 823, 987, 1099, 2469, 3297, 5761, 7379, 17283, 22137, 38681, 51653, 116043, 129211, 154959, 270767, 387633, 812301, 904477, 2713431, 6072917, 18218751, 42510419, 127531257]

約数ペア:

[(1, 127531257), (3, 42510419), (7, 18218751), (21, 6072917), (47, 2713431), (141, 904477), (157, 812301), (329, 387633), (471, 270767), (823, 154959), (987, 129211), (1099, 116043), (2469, 51653), (3297, 38681), (5761, 22137), (7379, 17283)]