28365220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109097}}^1$

素因数の和:109119

約数の個数: 24

約数和(自身を含む): 64149624

約数和(自身を除く): 35784404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109097, 218194, 436388, 545485, 1090970, 1418261, 2181940, 2836522, 5673044, 7091305, 14182610, 28365220]

約数ペア:

[(1, 28365220), (2, 14182610), (4, 7091305), (5, 5673044), (10, 2836522), (13, 2181940), (20, 1418261), (26, 1090970), (52, 545485), (65, 436388), (130, 218194), (260, 109097)]