81504100

素因数分解:

$2^2\times 5^2\times {\mathrm{397}}^1\times {\mathrm{2053}}^1$

素因数の和:2464

約数の個数: 36

約数和(自身を含む): 177395764

約数和(自身を除く): 95891664

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 397, 794, 1588, 1985, 2053, 3970, 4106, 7940, 8212, 9925, 10265, 19850, 20530, 39700, 41060, 51325, 102650, 205300, 815041, 1630082, 3260164, 4075205, 8150410, 16300820, 20376025, 40752050, 81504100]

約数ペア:

[(1, 81504100), (2, 40752050), (4, 20376025), (5, 16300820), (10, 8150410), (20, 4075205), (25, 3260164), (50, 1630082), (100, 815041), (397, 205300), (794, 102650), (1588, 51325), (1985, 41060), (2053, 39700), (3970, 20530), (4106, 19850), (7940, 10265), (8212, 9925)]