8138500

素因数分解:

$2^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:457

約数の個数: 48

約数和(自身を含む): 18253872

約数和(自身を除く): 10115372

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 397, 410, 500, 794, 820, 1025, 1588, 1985, 2050, 3970, 4100, 5125, 7940, 9925, 10250, 16277, 19850, 20500, 32554, 39700, 49625, 65108, 81385, 99250, 162770, 198500, 325540, 406925, 813850, 1627700, 2034625, 4069250, 8138500]

約数ペア:

[(1, 8138500), (2, 4069250), (4, 2034625), (5, 1627700), (10, 813850), (20, 406925), (25, 325540), (41, 198500), (50, 162770), (82, 99250), (100, 81385), (125, 65108), (164, 49625), (205, 39700), (250, 32554), (397, 20500), (410, 19850), (500, 16277), (794, 10250), (820, 9925), (1025, 7940), (1588, 5125), (1985, 4100), (2050, 3970)]