20289255

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2647}}^1$

素因数の和:2735

約数の個数: 32

約数和(自身を含む): 37622784

約数和(自身を除く): 17333529

約数列:

[1, 3, 5, 7, 15, 21, 35, 73, 105, 219, 365, 511, 1095, 1533, 2555, 2647, 7665, 7941, 13235, 18529, 39705, 55587, 92645, 193231, 277935, 579693, 966155, 1352617, 2898465, 4057851, 6763085, 20289255]

約数ペア:

[(1, 20289255), (3, 6763085), (5, 4057851), (7, 2898465), (15, 1352617), (21, 966155), (35, 579693), (73, 277935), (105, 193231), (219, 92645), (365, 55587), (511, 39705), (1095, 18529), (1533, 13235), (2555, 7941), (2647, 7665)]