1620025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:201

約数の個数: 24

約数和(自身を含む): 2258784

約数和(自身を除く): 638759

約数列:

[1, 5, 11, 25, 43, 55, 137, 215, 275, 473, 685, 1075, 1507, 2365, 3425, 5891, 7535, 11825, 29455, 37675, 64801, 147275, 324005, 1620025]

約数ペア:

[(1, 1620025), (5, 324005), (11, 147275), (25, 64801), (43, 37675), (55, 29455), (137, 11825), (215, 7535), (275, 5891), (473, 3425), (685, 2365), (1075, 1507)]