20424069

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{577}}^1$

素因数の和:631

約数の個数: 40

約数和(自身を含む): 33570240

約数和(自身を除く): 13146171

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 81, 171, 207, 437, 513, 577, 621, 1311, 1539, 1731, 1863, 3933, 5193, 10963, 11799, 13271, 15579, 32889, 35397, 39813, 46737, 98667, 119439, 252149, 296001, 358317, 756447, 888003, 1074951, 2269341, 6808023, 20424069]

約数ペア:

[(1, 20424069), (3, 6808023), (9, 2269341), (19, 1074951), (23, 888003), (27, 756447), (57, 358317), (69, 296001), (81, 252149), (171, 119439), (207, 98667), (437, 46737), (513, 39813), (577, 35397), (621, 32889), (1311, 15579), (1539, 13271), (1731, 11799), (1863, 10963), (3933, 5193)]