20919437

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 27955200

約数和(自身を除く): 7035763

約数列:

[1, 7, 11, 19, 77, 79, 133, 181, 209, 553, 869, 1267, 1463, 1501, 1991, 3439, 6083, 10507, 13937, 14299, 16511, 24073, 37829, 100093, 115577, 157289, 264803, 271681, 1101023, 1901767, 2988491, 20919437]

約数ペア:

[(1, 20919437), (7, 2988491), (11, 1901767), (19, 1101023), (77, 271681), (79, 264803), (133, 157289), (181, 115577), (209, 100093), (553, 37829), (869, 24073), (1267, 16511), (1463, 14299), (1501, 13937), (1991, 10507), (3439, 6083)]