21808940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{23201}}^1$

素因数の和:23257

約数の個数: 24

約数和(自身を含む): 46775232

約数和(自身を除く): 24966292

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 23201, 46402, 92804, 116005, 232010, 464020, 1090447, 2180894, 4361788, 5452235, 10904470, 21808940]

約数ペア:

[(1, 21808940), (2, 10904470), (4, 5452235), (5, 4361788), (10, 2180894), (20, 1090447), (47, 464020), (94, 232010), (188, 116005), (235, 92804), (470, 46402), (940, 23201)]