64654120

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{3319}}^1$

素因数の和:3817

約数の個数: 32

約数和(自身を含む): 145814400

約数和(自身を除く): 81160280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3319, 3896, 4870, 6638, 9740, 13276, 16595, 19480, 26552, 33190, 66380, 132760, 1616353, 3232706, 6465412, 8081765, 12930824, 16163530, 32327060, 64654120]

約数ペア:

[(1, 64654120), (2, 32327060), (4, 16163530), (5, 12930824), (8, 8081765), (10, 6465412), (20, 3232706), (40, 1616353), (487, 132760), (974, 66380), (1948, 33190), (2435, 26552), (3319, 19480), (3896, 16595), (4870, 13276), (6638, 9740)]