1860660425

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{440393}}^1$

素因数の和:440429

約数の個数: 18

約数和(自身を含む): 2498355162

約数和(自身を除く): 637694737

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 440393, 2201965, 5725109, 11009825, 28625545, 74426417, 143127725, 372132085, 1860660425]

約数ペア:

[(1, 1860660425), (5, 372132085), (13, 143127725), (25, 74426417), (65, 28625545), (169, 11009825), (325, 5725109), (845, 2201965), (4225, 440393)]