80521880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64937}}^1$

素因数の和:64979

約数の個数: 32

約数和(自身を含む): 187021440

約数和(自身を除く): 106499560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 64937, 129874, 259748, 324685, 519496, 649370, 1298740, 2013047, 2597480, 4026094, 8052188, 10065235, 16104376, 20130470, 40260940, 80521880]

約数ペア:

[(1, 80521880), (2, 40260940), (4, 20130470), (5, 16104376), (8, 10065235), (10, 8052188), (20, 4026094), (31, 2597480), (40, 2013047), (62, 1298740), (124, 649370), (155, 519496), (248, 324685), (310, 259748), (620, 129874), (1240, 64937)]