28870820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131231}}^1$

素因数の和:131251

約数の個数: 24

約数和(自身を含む): 66140928

約数和(自身を除く): 37270108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 131231, 262462, 524924, 656155, 1312310, 1443541, 2624620, 2887082, 5774164, 7217705, 14435410, 28870820]

約数ペア:

[(1, 28870820), (2, 14435410), (4, 7217705), (5, 5774164), (10, 2887082), (11, 2624620), (20, 1443541), (22, 1312310), (44, 656155), (55, 524924), (110, 262462), (220, 131231)]