20459800

素因数分解:

$2^3\times 5^2\times {\mathrm{102299}}^1$

素因数の和:102315

約数の個数: 24

約数和(自身を含む): 47569500

約数和(自身を除く): 27109700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 102299, 204598, 409196, 511495, 818392, 1022990, 2045980, 2557475, 4091960, 5114950, 10229900, 20459800]

約数ペア:

[(1, 20459800), (2, 10229900), (4, 5114950), (5, 4091960), (8, 2557475), (10, 2045980), (20, 1022990), (25, 818392), (40, 511495), (50, 409196), (100, 204598), (200, 102299)]