1340885

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{421}}^1$

素因数の和:453

約数の個数: 24

約数和(自身を含む): 2020536

約数和(自身を除く): 679651

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 421, 455, 637, 2105, 2947, 3185, 5473, 14735, 20629, 27365, 38311, 103145, 191555, 268177, 1340885]

約数ペア:

[(1, 1340885), (5, 268177), (7, 191555), (13, 103145), (35, 38311), (49, 27365), (65, 20629), (91, 14735), (245, 5473), (421, 3185), (455, 2947), (637, 2105)]