19706380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11071}}^1$

素因数の和:11169

約数の個数: 24

約数和(自身を含む): 41852160

約数和(自身を除く): 22145780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11071, 22142, 44284, 55355, 110710, 221420, 985319, 1970638, 3941276, 4926595, 9853190, 19706380]

約数ペア:

[(1, 19706380), (2, 9853190), (4, 4926595), (5, 3941276), (10, 1970638), (20, 985319), (89, 221420), (178, 110710), (356, 55355), (445, 44284), (890, 22142), (1780, 11071)]