131206520

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{5351}}^1$

素因数の和:5975

約数の個数: 32

約数和(自身を含む): 295751520

約数和(自身を除く): 164545000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 1226, 2452, 3065, 4904, 5351, 6130, 10702, 12260, 21404, 24520, 26755, 42808, 53510, 107020, 214040, 3280163, 6560326, 13120652, 16400815, 26241304, 32801630, 65603260, 131206520]

約数ペア:

[(1, 131206520), (2, 65603260), (4, 32801630), (5, 26241304), (8, 16400815), (10, 13120652), (20, 6560326), (40, 3280163), (613, 214040), (1226, 107020), (2452, 53510), (3065, 42808), (4904, 26755), (5351, 24520), (6130, 21404), (10702, 12260)]