19860425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1153}}^1$

素因数の和:1229

約数の個数: 24

約数和(自身を含む): 27045144

約数和(自身を除く): 7184719

約数列:

[1, 5, 13, 25, 53, 65, 265, 325, 689, 1153, 1325, 3445, 5765, 14989, 17225, 28825, 61109, 74945, 305545, 374725, 794417, 1527725, 3972085, 19860425]

約数ペア:

[(1, 19860425), (5, 3972085), (13, 1527725), (25, 794417), (53, 374725), (65, 305545), (265, 74945), (325, 61109), (689, 28825), (1153, 17225), (1325, 14989), (3445, 5765)]