520000018

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{69463}}^1$

素因数の和:69681

約数の個数: 16

約数和(自身を含む): 825232320

約数和(自身を除く): 305232302

約数列:

[1, 2, 19, 38, 197, 394, 3743, 7486, 69463, 138926, 1319797, 2639594, 13684211, 27368422, 260000009, 520000018]

約数ペア:

[(1, 520000018), (2, 260000009), (19, 27368422), (38, 13684211), (197, 2639594), (394, 1319797), (3743, 138926), (7486, 69463)]