129999376

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{624997}}^1$

素因数の和:625018

約数の個数: 20

約数和(自身を含む): 271249132

約数和(自身を除く): 141249756

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 624997, 1249994, 2499988, 4999976, 8124961, 9999952, 16249922, 32499844, 64999688, 129999376]

約数ペア:

[(1, 129999376), (2, 64999688), (4, 32499844), (8, 16249922), (13, 9999952), (16, 8124961), (26, 4999976), (52, 2499988), (104, 1249994), (208, 624997)]