220951880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{178187}}^1$

素因数の和:178229

約数の個数: 32

約数和(自身を含む): 513181440

約数和(自身を除く): 292229560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 178187, 356374, 712748, 890935, 1425496, 1781870, 3563740, 5523797, 7127480, 11047594, 22095188, 27618985, 44190376, 55237970, 110475940, 220951880]

約数ペア:

[(1, 220951880), (2, 110475940), (4, 55237970), (5, 44190376), (8, 27618985), (10, 22095188), (20, 11047594), (31, 7127480), (40, 5523797), (62, 3563740), (124, 1781870), (155, 1425496), (248, 890935), (310, 712748), (620, 356374), (1240, 178187)]