27245421

素因数分解:

$3^2\times 7^2\times {\mathrm{61781}}^1$

素因数の和:61801

約数の個数: 18

約数和(自身を含む): 45780462

約数和(自身を除く): 18535041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 61781, 185343, 432467, 556029, 1297401, 3027269, 3892203, 9081807, 27245421]

約数ペア:

[(1, 27245421), (3, 9081807), (7, 3892203), (9, 3027269), (21, 1297401), (49, 556029), (63, 432467), (147, 185343), (441, 61781)]