20391470

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{941}}^1$

素因数の和:1156

約数の個数: 32

約数和(自身を含む): 40287456

約数和(自身を除く): 19895986

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197, 394, 941, 985, 1882, 1970, 2167, 4334, 4705, 9410, 10351, 10835, 20702, 21670, 51755, 103510, 185377, 370754, 926885, 1853770, 2039147, 4078294, 10195735, 20391470]

約数ペア:

[(1, 20391470), (2, 10195735), (5, 4078294), (10, 2039147), (11, 1853770), (22, 926885), (55, 370754), (110, 185377), (197, 103510), (394, 51755), (941, 21670), (985, 20702), (1882, 10835), (1970, 10351), (2167, 9410), (4334, 4705)]