18686180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{30139}}^1$

素因数の和:30179

約数の個数: 24

約数和(自身を含む): 40508160

約数和(自身を除く): 21821980

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 30139, 60278, 120556, 150695, 301390, 602780, 934309, 1868618, 3737236, 4671545, 9343090, 18686180]

約数ペア:

[(1, 18686180), (2, 9343090), (4, 4671545), (5, 3737236), (10, 1868618), (20, 934309), (31, 602780), (62, 301390), (124, 150695), (155, 120556), (310, 60278), (620, 30139)]