20784992

素因数分解:

$2^5\times {\mathrm{59}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 42411600

約数和(自身を除く): 21626608

約数列:

[1, 2, 4, 8, 16, 32, 59, 101, 109, 118, 202, 218, 236, 404, 436, 472, 808, 872, 944, 1616, 1744, 1888, 3232, 3488, 5959, 6431, 11009, 11918, 12862, 22018, 23836, 25724, 44036, 47672, 51448, 88072, 95344, 102896, 176144, 190688, 205792, 352288, 649531, 1299062, 2598124, 5196248, 10392496, 20784992]

約数ペア:

[(1, 20784992), (2, 10392496), (4, 5196248), (8, 2598124), (16, 1299062), (32, 649531), (59, 352288), (101, 205792), (109, 190688), (118, 176144), (202, 102896), (218, 95344), (236, 88072), (404, 51448), (436, 47672), (472, 44036), (808, 25724), (872, 23836), (944, 22018), (1616, 12862), (1744, 11918), (1888, 11009), (3232, 6431), (3488, 5959)]