18105842680

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2500807}}^1$

素因数の和:2500999

約数の個数: 32

約数和(自身を含む): 40963235040

約数和(自身を除く): 22857392360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 2500807, 5001614, 10003228, 12504035, 20006456, 25008070, 50016140, 100032280, 452646067, 905292134, 1810584268, 2263230335, 3621168536, 4526460670, 9052921340, 18105842680]

約数ペア:

[(1, 18105842680), (2, 9052921340), (4, 4526460670), (5, 3621168536), (8, 2263230335), (10, 1810584268), (20, 905292134), (40, 452646067), (181, 100032280), (362, 50016140), (724, 25008070), (905, 20006456), (1448, 12504035), (1810, 10003228), (3620, 5001614), (7240, 2500807)]