990440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2251}}^1$

素因数の和:2273

約数の個数: 32

約数和(自身を含む): 2432160

約数和(自身を除く): 1441720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 2251, 4502, 9004, 11255, 18008, 22510, 24761, 45020, 49522, 90040, 99044, 123805, 198088, 247610, 495220, 990440]

約数ペア:

[(1, 990440), (2, 495220), (4, 247610), (5, 198088), (8, 123805), (10, 99044), (11, 90040), (20, 49522), (22, 45020), (40, 24761), (44, 22510), (55, 18008), (88, 11255), (110, 9004), (220, 4502), (440, 2251)]