21489340

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22861}}^1$

素因数の和:22917

約数の個数: 24

約数和(自身を含む): 46089792

約数和(自身を除く): 24600452

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22861, 45722, 91444, 114305, 228610, 457220, 1074467, 2148934, 4297868, 5372335, 10744670, 21489340]

約数ペア:

[(1, 21489340), (2, 10744670), (4, 5372335), (5, 4297868), (10, 2148934), (20, 1074467), (47, 457220), (94, 228610), (188, 114305), (235, 91444), (470, 45722), (940, 22861)]