8890040

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2039}}^1$

素因数の和:2159

約数の個数: 32

約数和(自身を含む): 20196000

約数和(自身を除く): 11305960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2039, 2180, 4078, 4360, 8156, 10195, 16312, 20390, 40780, 81560, 222251, 444502, 889004, 1111255, 1778008, 2222510, 4445020, 8890040]

約数ペア:

[(1, 8890040), (2, 4445020), (4, 2222510), (5, 1778008), (8, 1111255), (10, 889004), (20, 444502), (40, 222251), (109, 81560), (218, 40780), (436, 20390), (545, 16312), (872, 10195), (1090, 8156), (2039, 4360), (2180, 4078)]