18858381

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^2$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 26996640

約数和(自身を除く): 8138259

約数列:

[1, 3, 29, 43, 71, 87, 129, 213, 1247, 2059, 3053, 3741, 5041, 6177, 9159, 15123, 88537, 146189, 216763, 265611, 438567, 650289, 6286127, 18858381]

約数ペア:

[(1, 18858381), (3, 6286127), (29, 650289), (43, 438567), (71, 265611), (87, 216763), (129, 146189), (213, 88537), (1247, 15123), (2059, 9159), (3053, 6177), (3741, 5041)]