81108680

素因数分解:

$2^3\times 5^1\times {\mathrm{1049}}^1\times {\mathrm{1933}}^1$

素因数の和:2993

約数の個数: 32

約数和(自身を含む): 182763000

約数和(自身を除く): 101654320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1049, 1933, 2098, 3866, 4196, 5245, 7732, 8392, 9665, 10490, 15464, 19330, 20980, 38660, 41960, 77320, 2027717, 4055434, 8110868, 10138585, 16221736, 20277170, 40554340, 81108680]

約数ペア:

[(1, 81108680), (2, 40554340), (4, 20277170), (5, 16221736), (8, 10138585), (10, 8110868), (20, 4055434), (40, 2027717), (1049, 77320), (1933, 41960), (2098, 38660), (3866, 20980), (4196, 19330), (5245, 15464), (7732, 10490), (8392, 9665)]