19701725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{307}}^1$

素因数の和:485

約数の個数: 24

約数和(自身を含む): 26123328

約数和(自身を除く): 6421603

約数列:

[1, 5, 17, 25, 85, 151, 307, 425, 755, 1535, 2567, 3775, 5219, 7675, 12835, 26095, 46357, 64175, 130475, 231785, 788069, 1158925, 3940345, 19701725]

約数ペア:

[(1, 19701725), (5, 3940345), (17, 1158925), (25, 788069), (85, 231785), (151, 130475), (307, 64175), (425, 46357), (755, 26095), (1535, 12835), (2567, 7675), (3775, 5219)]