80717680

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2341}}^1$

素因数の和:2785

約数の個数: 40

約数和(自身を含む): 188184384

約数和(自身を除く): 107466704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 862, 1724, 2155, 2341, 3448, 4310, 4682, 6896, 8620, 9364, 11705, 17240, 18728, 23410, 34480, 37456, 46820, 93640, 187280, 1008971, 2017942, 4035884, 5044855, 8071768, 10089710, 16143536, 20179420, 40358840, 80717680]

約数ペア:

[(1, 80717680), (2, 40358840), (4, 20179420), (5, 16143536), (8, 10089710), (10, 8071768), (16, 5044855), (20, 4035884), (40, 2017942), (80, 1008971), (431, 187280), (862, 93640), (1724, 46820), (2155, 37456), (2341, 34480), (3448, 23410), (4310, 18728), (4682, 17240), (6896, 11705), (8620, 9364)]