664322180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{810149}}^1$

素因数の和:810199

約数の個数: 24

約数和(自身を含む): 1429104600

約数和(自身を除く): 764782420

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 810149, 1620298, 3240596, 4050745, 8101490, 16202980, 33216109, 66432218, 132864436, 166080545, 332161090, 664322180]

約数ペア:

[(1, 664322180), (2, 332161090), (4, 166080545), (5, 132864436), (10, 66432218), (20, 33216109), (41, 16202980), (82, 8101490), (164, 4050745), (205, 3240596), (410, 1620298), (820, 810149)]