201990615

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{827}}^1\times {\mathrm{857}}^1$

素因数の和:1711

約数の個数: 32

約数和(自身を含む): 341003520

約数和(自身を除く): 139012905

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 827, 857, 2481, 2571, 4135, 4285, 12405, 12855, 15713, 16283, 47139, 48849, 78565, 81415, 235695, 244245, 708739, 2126217, 3543695, 10631085, 13466041, 40398123, 67330205, 201990615]

約数ペア:

[(1, 201990615), (3, 67330205), (5, 40398123), (15, 13466041), (19, 10631085), (57, 3543695), (95, 2126217), (285, 708739), (827, 244245), (857, 235695), (2481, 81415), (2571, 78565), (4135, 48849), (4285, 47139), (12405, 16283), (12855, 15713)]