100400

素因数分解:

$2^4\times 5^2\times {\mathrm{251}}^1$

素因数の和:269

約数の個数: 30

約数和(自身を含む): 242172

約数和(自身を除く): 141772

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 251, 400, 502, 1004, 1255, 2008, 2510, 4016, 5020, 6275, 10040, 12550, 20080, 25100, 50200, 100400]

約数ペア:

[(1, 100400), (2, 50200), (4, 25100), (5, 20080), (8, 12550), (10, 10040), (16, 6275), (20, 5020), (25, 4016), (40, 2510), (50, 2008), (80, 1255), (100, 1004), (200, 502), (251, 400)]