28288780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108803}}^1$

素因数の和:108825

約数の個数: 24

約数和(自身を含む): 63976752

約数和(自身を除く): 35687972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108803, 217606, 435212, 544015, 1088030, 1414439, 2176060, 2828878, 5657756, 7072195, 14144390, 28288780]

約数ペア:

[(1, 28288780), (2, 14144390), (4, 7072195), (5, 5657756), (10, 2828878), (13, 2176060), (20, 1414439), (26, 1088030), (52, 544015), (65, 435212), (130, 217606), (260, 108803)]