21722180

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{11197}}^1$

素因数の和:11303

約数の個数: 24

約数和(自身を含む): 46090968

約数和(自身を除く): 24368788

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 11197, 22394, 44788, 55985, 111970, 223940, 1086109, 2172218, 4344436, 5430545, 10861090, 21722180]

約数ペア:

[(1, 21722180), (2, 10861090), (4, 5430545), (5, 4344436), (10, 2172218), (20, 1086109), (97, 223940), (194, 111970), (388, 55985), (485, 44788), (970, 22394), (1940, 11197)]