25481421

素因数分解:

$3^2\times 7^2\times {\mathrm{57781}}^1$

素因数の和:57801

約数の個数: 18

約数和(自身を含む): 42816462

約数和(自身を除く): 17335041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 57781, 173343, 404467, 520029, 1213401, 2831269, 3640203, 8493807, 25481421]

約数ペア:

[(1, 25481421), (3, 8493807), (7, 3640203), (9, 2831269), (21, 1213401), (49, 520029), (63, 404467), (147, 173343), (441, 57781)]