66813260

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{7541}}^1$

素因数の和:7993

約数の個数: 24

約数和(自身を含む): 140643216

約数和(自身を除く): 73829956

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 4430, 7541, 8860, 15082, 30164, 37705, 75410, 150820, 3340663, 6681326, 13362652, 16703315, 33406630, 66813260]

約数ペア:

[(1, 66813260), (2, 33406630), (4, 16703315), (5, 13362652), (10, 6681326), (20, 3340663), (443, 150820), (886, 75410), (1772, 37705), (2215, 30164), (4430, 15082), (7541, 8860)]