28981480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{65867}}^1$

素因数の和:65889

約数の個数: 32

約数和(自身を含む): 71137440

約数和(自身を除く): 42155960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 65867, 131734, 263468, 329335, 526936, 658670, 724537, 1317340, 1449074, 2634680, 2898148, 3622685, 5796296, 7245370, 14490740, 28981480]

約数ペア:

[(1, 28981480), (2, 14490740), (4, 7245370), (5, 5796296), (8, 3622685), (10, 2898148), (11, 2634680), (20, 1449074), (22, 1317340), (40, 724537), (44, 658670), (55, 526936), (88, 329335), (110, 263468), (220, 131734), (440, 65867)]