19879180

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{10247}}^1$

素因数の和:10353

約数の個数: 24

約数和(自身を含む): 42180768

約数和(自身を除く): 22301588

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 10247, 20494, 40988, 51235, 102470, 204940, 993959, 1987918, 3975836, 4969795, 9939590, 19879180]

約数ペア:

[(1, 19879180), (2, 9939590), (4, 4969795), (5, 3975836), (10, 1987918), (20, 993959), (97, 204940), (194, 102470), (388, 51235), (485, 40988), (970, 20494), (1940, 10247)]