81172760

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{43177}}^1$

素因数の和:43235

約数の個数: 32

約数和(自身を含む): 186528960

約数和(自身を除く): 105356200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 43177, 86354, 172708, 215885, 345416, 431770, 863540, 1727080, 2029319, 4058638, 8117276, 10146595, 16234552, 20293190, 40586380, 81172760]

約数ペア:

[(1, 81172760), (2, 40586380), (4, 20293190), (5, 16234552), (8, 10146595), (10, 8117276), (20, 4058638), (40, 2029319), (47, 1727080), (94, 863540), (188, 431770), (235, 345416), (376, 215885), (470, 172708), (940, 86354), (1880, 43177)]