20915284

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7589}}^1$

素因数の和:7659

約数の個数: 24

約数和(自身を含む): 40166280

約数和(自身を除く): 19250996

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7589, 15178, 30356, 98657, 197314, 394628, 402217, 804434, 1608868, 5228821, 10457642, 20915284]

約数ペア:

[(1, 20915284), (2, 10457642), (4, 5228821), (13, 1608868), (26, 804434), (52, 402217), (53, 394628), (106, 197314), (212, 98657), (689, 30356), (1378, 15178), (2756, 7589)]