19700840

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4603}}^1$

素因数の和:4721

約数の個数: 32

約数和(自身を含む): 44750880

約数和(自身を除く): 25050040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4603, 9206, 18412, 23015, 36824, 46030, 92060, 184120, 492521, 985042, 1970084, 2462605, 3940168, 4925210, 9850420, 19700840]

約数ペア:

[(1, 19700840), (2, 9850420), (4, 4925210), (5, 3940168), (8, 2462605), (10, 1970084), (20, 985042), (40, 492521), (107, 184120), (214, 92060), (428, 46030), (535, 36824), (856, 23015), (1070, 18412), (2140, 9206), (4280, 4603)]