28205385

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1327}}^1$

素因数の和:1457

約数の個数: 32

約数和(自身を含む): 49082880

約数和(自身を除く): 20877495

約数列:

[1, 3, 5, 13, 15, 39, 65, 109, 195, 327, 545, 1327, 1417, 1635, 3981, 4251, 6635, 7085, 17251, 19905, 21255, 51753, 86255, 144643, 258765, 433929, 723215, 1880359, 2169645, 5641077, 9401795, 28205385]

約数ペア:

[(1, 28205385), (3, 9401795), (5, 5641077), (13, 2169645), (15, 1880359), (39, 723215), (65, 433929), (109, 258765), (195, 144643), (327, 86255), (545, 51753), (1327, 21255), (1417, 19905), (1635, 17251), (3981, 7085), (4251, 6635)]