66805520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43951}}^1$

素因数の和:43983

約数の個数: 40

約数和(自身を含む): 163501440

約数和(自身を除く): 96695920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 43951, 87902, 175804, 219755, 351608, 439510, 703216, 835069, 879020, 1670138, 1758040, 3340276, 3516080, 4175345, 6680552, 8350690, 13361104, 16701380, 33402760, 66805520]

約数ペア:

[(1, 66805520), (2, 33402760), (4, 16701380), (5, 13361104), (8, 8350690), (10, 6680552), (16, 4175345), (19, 3516080), (20, 3340276), (38, 1758040), (40, 1670138), (76, 879020), (80, 835069), (95, 703216), (152, 439510), (190, 351608), (304, 219755), (380, 175804), (760, 87902), (1520, 43951)]