20715228

素因数分解:

$2^2\times 3^2\times {\mathrm{257}}^1\times {\mathrm{2239}}^1$

素因数の和:2506

約数の個数: 36

約数和(自身を含む): 52590720

約数和(自身を除く): 31875492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 257, 514, 771, 1028, 1542, 2239, 2313, 3084, 4478, 4626, 6717, 8956, 9252, 13434, 20151, 26868, 40302, 80604, 575423, 1150846, 1726269, 2301692, 3452538, 5178807, 6905076, 10357614, 20715228]

約数ペア:

[(1, 20715228), (2, 10357614), (3, 6905076), (4, 5178807), (6, 3452538), (9, 2301692), (12, 1726269), (18, 1150846), (36, 575423), (257, 80604), (514, 40302), (771, 26868), (1028, 20151), (1542, 13434), (2239, 9252), (2313, 8956), (3084, 6717), (4478, 4626)]