19915675

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{263}}^1$

素因数の和:519

約数の個数: 24

約数和(自身を含む): 26810784

約数和(自身を除く): 6895109

約数列:

[1, 5, 13, 25, 65, 233, 263, 325, 1165, 1315, 3029, 3419, 5825, 6575, 15145, 17095, 61279, 75725, 85475, 306395, 796627, 1531975, 3983135, 19915675]

約数ペア:

[(1, 19915675), (5, 3983135), (13, 1531975), (25, 796627), (65, 306395), (233, 85475), (263, 75725), (325, 61279), (1165, 17095), (1315, 15145), (3029, 6575), (3419, 5825)]