28820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1$

素因数の和:151

約数の個数: 24

約数和(自身を含む): 66528

約数和(自身を除く): 37708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 131, 220, 262, 524, 655, 1310, 1441, 2620, 2882, 5764, 7205, 14410, 28820]

約数ペア:

[(1, 28820), (2, 14410), (4, 7205), (5, 5764), (10, 2882), (11, 2620), (20, 1441), (22, 1310), (44, 655), (55, 524), (110, 262), (131, 220)]