639875085

素因数分解:

$3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{233}}^1\times {\mathrm{821}}^1$

素因数の和:1285

約数の個数: 32

約数和(自身を含む): 1034062848

約数和(自身を除く): 394187763

約数列:

[1, 3, 5, 15, 223, 233, 669, 699, 821, 1115, 1165, 2463, 3345, 3495, 4105, 12315, 51959, 155877, 183083, 191293, 259795, 549249, 573879, 779385, 915415, 956465, 2746245, 2869395, 42658339, 127975017, 213291695, 639875085]

約数ペア:

[(1, 639875085), (3, 213291695), (5, 127975017), (15, 42658339), (223, 2869395), (233, 2746245), (669, 956465), (699, 915415), (821, 779385), (1115, 573879), (1165, 549249), (2463, 259795), (3345, 191293), (3495, 183083), (4105, 155877), (12315, 51959)]