20781846

素因数分解:

$2^1\times 3^5\times {\mathrm{61}}^1\times {\mathrm{701}}^1$

素因数の和:779

約数の個数: 48

約数和(自身を含む): 47528208

約数和(自身を除く): 26746362

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 81, 122, 162, 183, 243, 366, 486, 549, 701, 1098, 1402, 1647, 2103, 3294, 4206, 4941, 6309, 9882, 12618, 14823, 18927, 29646, 37854, 42761, 56781, 85522, 113562, 128283, 170343, 256566, 340686, 384849, 769698, 1154547, 2309094, 3463641, 6927282, 10390923, 20781846]

約数ペア:

[(1, 20781846), (2, 10390923), (3, 6927282), (6, 3463641), (9, 2309094), (18, 1154547), (27, 769698), (54, 384849), (61, 340686), (81, 256566), (122, 170343), (162, 128283), (183, 113562), (243, 85522), (366, 56781), (486, 42761), (549, 37854), (701, 29646), (1098, 18927), (1402, 14823), (1647, 12618), (2103, 9882), (3294, 6309), (4206, 4941)]