21974380

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{241}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 47811456

約数和(自身を除く): 25837076

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 97, 188, 194, 235, 241, 388, 470, 482, 485, 940, 964, 970, 1205, 1940, 2410, 4559, 4820, 9118, 11327, 18236, 22654, 22795, 23377, 45308, 45590, 46754, 56635, 91180, 93508, 113270, 116885, 226540, 233770, 467540, 1098719, 2197438, 4394876, 5493595, 10987190, 21974380]

約数ペア:

[(1, 21974380), (2, 10987190), (4, 5493595), (5, 4394876), (10, 2197438), (20, 1098719), (47, 467540), (94, 233770), (97, 226540), (188, 116885), (194, 113270), (235, 93508), (241, 91180), (388, 56635), (470, 46754), (482, 45590), (485, 45308), (940, 23377), (964, 22795), (970, 22654), (1205, 18236), (1940, 11327), (2410, 9118), (4559, 4820)]