61021720

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{6841}}^1$

素因数の和:7075

約数の個数: 32

約数和(自身を含む): 137934720

約数和(自身を除く): 76913000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 6841, 8920, 13682, 27364, 34205, 54728, 68410, 136820, 273640, 1525543, 3051086, 6102172, 7627715, 12204344, 15255430, 30510860, 61021720]

約数ペア:

[(1, 61021720), (2, 30510860), (4, 15255430), (5, 12204344), (8, 7627715), (10, 6102172), (20, 3051086), (40, 1525543), (223, 273640), (446, 136820), (892, 68410), (1115, 54728), (1784, 34205), (2230, 27364), (4460, 13682), (6841, 8920)]