18730985

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{5881}}^1$

素因数の和:5913

約数の個数: 24

約数和(自身を含む): 28163016

約数和(自身を除く): 9432031

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 5881, 29405, 41167, 76453, 205835, 288169, 382265, 535171, 1440845, 2675855, 3746197, 18730985]

約数ペア:

[(1, 18730985), (5, 3746197), (7, 2675855), (13, 1440845), (35, 535171), (49, 382265), (65, 288169), (91, 205835), (245, 76453), (455, 41167), (637, 29405), (3185, 5881)]