77818180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{20807}}^1$

素因数の和:20844

約数の個数: 48

約数和(自身を含む): 188770176

約数和(自身を除く): 110951996

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 20807, 41614, 83228, 104035, 208070, 228877, 353719, 416140, 457754, 707438, 915508, 1144385, 1414876, 1768595, 2288770, 3537190, 3890909, 4577540, 7074380, 7781818, 15563636, 19454545, 38909090, 77818180]

約数ペア:

[(1, 77818180), (2, 38909090), (4, 19454545), (5, 15563636), (10, 7781818), (11, 7074380), (17, 4577540), (20, 3890909), (22, 3537190), (34, 2288770), (44, 1768595), (55, 1414876), (68, 1144385), (85, 915508), (110, 707438), (170, 457754), (187, 416140), (220, 353719), (340, 228877), (374, 208070), (748, 104035), (935, 83228), (1870, 41614), (3740, 20807)]