20756680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74131}}^1$

素因数の和:74149

約数の個数: 32

約数和(自身を含む): 53375040

約数和(自身を除く): 32618360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74131, 148262, 296524, 370655, 518917, 593048, 741310, 1037834, 1482620, 2075668, 2594585, 2965240, 4151336, 5189170, 10378340, 20756680]

約数ペア:

[(1, 20756680), (2, 10378340), (4, 5189170), (5, 4151336), (7, 2965240), (8, 2594585), (10, 2075668), (14, 1482620), (20, 1037834), (28, 741310), (35, 593048), (40, 518917), (56, 370655), (70, 296524), (140, 148262), (280, 74131)]