20848653

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 35942400

約数和(自身を除く): 15093747

約数列:

[1, 3, 7, 9, 21, 59, 63, 71, 79, 177, 213, 237, 413, 497, 531, 553, 639, 711, 1239, 1491, 1659, 3717, 4189, 4473, 4661, 4977, 5609, 12567, 13983, 16827, 29323, 32627, 37701, 39263, 41949, 50481, 87969, 97881, 117789, 263907, 293643, 330931, 353367, 992793, 2316517, 2978379, 6949551, 20848653]

約数ペア:

[(1, 20848653), (3, 6949551), (7, 2978379), (9, 2316517), (21, 992793), (59, 353367), (63, 330931), (71, 293643), (79, 263907), (177, 117789), (213, 97881), (237, 87969), (413, 50481), (497, 41949), (531, 39263), (553, 37701), (639, 32627), (711, 29323), (1239, 16827), (1491, 13983), (1659, 12567), (3717, 5609), (4189, 4977), (4473, 4661)]