20390223

素因数分解:

$3^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{2351}}^1$

素因数の和:2427

約数の個数: 24

約数和(自身を含む): 32175360

約数和(自身を除く): 11785137

約数列:

[1, 3, 7, 21, 49, 59, 147, 177, 413, 1239, 2351, 2891, 7053, 8673, 16457, 49371, 115199, 138709, 345597, 416127, 970963, 2912889, 6796741, 20390223]

約数ペア:

[(1, 20390223), (3, 6796741), (7, 2912889), (21, 970963), (49, 416127), (59, 345597), (147, 138709), (177, 115199), (413, 49371), (1239, 16457), (2351, 8673), (2891, 7053)]