87778990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{39719}}^1$

素因数の和:39756

約数の個数: 32

約数和(自身を含む): 180169920

約数和(自身を除く): 92390930

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 39719, 79438, 198595, 397190, 516347, 675223, 1032694, 1350446, 2581735, 3376115, 5163470, 6752230, 8777899, 17555798, 43889495, 87778990]

約数ペア:

[(1, 87778990), (2, 43889495), (5, 17555798), (10, 8777899), (13, 6752230), (17, 5163470), (26, 3376115), (34, 2581735), (65, 1350446), (85, 1032694), (130, 675223), (170, 516347), (221, 397190), (442, 198595), (1105, 79438), (2210, 39719)]