209969156375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{8521}}^1\times {\mathrm{17921}}^1$

素因数の和:26468

約数の個数: 32

約数和(自身を含む): 285912963648

約数和(自身を除く): 75943807273

約数列:

[1, 5, 11, 25, 55, 125, 275, 1375, 8521, 17921, 42605, 89605, 93731, 197131, 213025, 448025, 468655, 985655, 1065125, 2240125, 2343275, 4928275, 11716375, 24641375, 152704841, 763524205, 1679753251, 3817621025, 8398766255, 19088105125, 41993831275, 209969156375]

約数ペア:

[(1, 209969156375), (5, 41993831275), (11, 19088105125), (25, 8398766255), (55, 3817621025), (125, 1679753251), (275, 763524205), (1375, 152704841), (8521, 24641375), (17921, 11716375), (42605, 4928275), (89605, 2343275), (93731, 2240125), (197131, 1065125), (213025, 985655), (448025, 468655)]