21748940

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17827}}^1$

素因数の和:17897

約数の個数: 24

約数和(自身を含む): 46424112

約数和(自身を除く): 24675172

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17827, 35654, 71308, 89135, 178270, 356540, 1087447, 2174894, 4349788, 5437235, 10874470, 21748940]

約数ペア:

[(1, 21748940), (2, 10874470), (4, 5437235), (5, 4349788), (10, 2174894), (20, 1087447), (61, 356540), (122, 178270), (244, 89135), (305, 71308), (610, 35654), (1220, 17827)]