78467420

素因数分解:

$2^2\times 5^1\times {\mathrm{1103}}^1\times {\mathrm{3557}}^1$

素因数の和:4669

約数の個数: 24

約数和(自身を含む): 164977344

約数和(自身を除く): 86509924

約数列:

[1, 2, 4, 5, 10, 20, 1103, 2206, 3557, 4412, 5515, 7114, 11030, 14228, 17785, 22060, 35570, 71140, 3923371, 7846742, 15693484, 19616855, 39233710, 78467420]

約数ペア:

[(1, 78467420), (2, 39233710), (4, 19616855), (5, 15693484), (10, 7846742), (20, 3923371), (1103, 71140), (2206, 35570), (3557, 22060), (4412, 17785), (5515, 14228), (7114, 11030)]