1991300

素因数分解:

$2^2\times 5^2\times {\mathrm{19913}}^1$

素因数の和:19927

約数の個数: 18

約数和(自身を含む): 4321338

約数和(自身を除く): 2330038

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 19913, 39826, 79652, 99565, 199130, 398260, 497825, 995650, 1991300]

約数ペア:

[(1, 1991300), (2, 995650), (4, 497825), (5, 398260), (10, 199130), (20, 99565), (25, 79652), (50, 39826), (100, 19913)]