20964723

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 32288256

約数和(自身を除く): 11323533

約数列:

[1, 3, 13, 17, 39, 51, 103, 221, 307, 309, 663, 921, 1339, 1751, 3991, 4017, 5219, 5253, 11973, 15657, 22763, 31621, 67847, 68289, 94863, 203541, 411073, 537557, 1233219, 1612671, 6988241, 20964723]

約数ペア:

[(1, 20964723), (3, 6988241), (13, 1612671), (17, 1233219), (39, 537557), (51, 411073), (103, 203541), (221, 94863), (307, 68289), (309, 67847), (663, 31621), (921, 22763), (1339, 15657), (1751, 11973), (3991, 5253), (4017, 5219)]