21081775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5897}}^1$

素因数の和:5931

約数の個数: 24

約数和(自身を含む): 30716784

約数和(自身を除く): 9635009

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 275, 325, 715, 3575, 5897, 29485, 64867, 76661, 147425, 324335, 383305, 843271, 1621675, 1916525, 4216355, 21081775]

約数ペア:

[(1, 21081775), (5, 4216355), (11, 1916525), (13, 1621675), (25, 843271), (55, 383305), (65, 324335), (143, 147425), (275, 76661), (325, 64867), (715, 29485), (3575, 5897)]