28409480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64567}}^1$

素因数の和:64589

約数の個数: 32

約数和(自身を含む): 69733440

約数和(自身を除く): 41323960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 64567, 129134, 258268, 322835, 516536, 645670, 710237, 1291340, 1420474, 2582680, 2840948, 3551185, 5681896, 7102370, 14204740, 28409480]

約数ペア:

[(1, 28409480), (2, 14204740), (4, 7102370), (5, 5681896), (8, 3551185), (10, 2840948), (11, 2582680), (20, 1420474), (22, 1291340), (40, 710237), (44, 645670), (55, 516536), (88, 322835), (110, 258268), (220, 129134), (440, 64567)]