18550040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11311}}^1$

素因数の和:11363

約数の個数: 32

約数和(自身を含む): 42759360

約数和(自身を除く): 24209320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11311, 22622, 45244, 56555, 90488, 113110, 226220, 452440, 463751, 927502, 1855004, 2318755, 3710008, 4637510, 9275020, 18550040]

約数ペア:

[(1, 18550040), (2, 9275020), (4, 4637510), (5, 3710008), (8, 2318755), (10, 1855004), (20, 927502), (40, 463751), (41, 452440), (82, 226220), (164, 113110), (205, 90488), (328, 56555), (410, 45244), (820, 22622), (1640, 11311)]