21100180

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22447}}^1$

素因数の和:22503

約数の個数: 24

約数和(自身を含む): 45255168

約数和(自身を除く): 24154988

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22447, 44894, 89788, 112235, 224470, 448940, 1055009, 2110018, 4220036, 5275045, 10550090, 21100180]

約数ペア:

[(1, 21100180), (2, 10550090), (4, 5275045), (5, 4220036), (10, 2110018), (20, 1055009), (47, 448940), (94, 224470), (188, 112235), (235, 89788), (470, 44894), (940, 22447)]