20121725

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{613}}^1$

素因数の和:737

約数の個数: 24

約数和(自身を含む): 27180552

約数和(自身を除く): 7058827

約数列:

[1, 5, 13, 25, 65, 101, 325, 505, 613, 1313, 2525, 3065, 6565, 7969, 15325, 32825, 39845, 61913, 199225, 309565, 804869, 1547825, 4024345, 20121725]

約数ペア:

[(1, 20121725), (5, 4024345), (13, 1547825), (25, 804869), (65, 309565), (101, 199225), (325, 61913), (505, 39845), (613, 32825), (1313, 15325), (2525, 7969), (3065, 6565)]