20926755

素因数分解:

$3^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{317}}^1$

素因数の和:497

約数の個数: 40

約数和(自身を含む): 37862352

約数和(自身を除く): 16935597

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 163, 317, 405, 489, 815, 951, 1467, 1585, 2445, 2853, 4401, 4755, 7335, 8559, 13203, 14265, 22005, 25677, 42795, 51671, 66015, 128385, 155013, 258355, 465039, 775065, 1395117, 2325195, 4185351, 6975585, 20926755]

約数ペア:

[(1, 20926755), (3, 6975585), (5, 4185351), (9, 2325195), (15, 1395117), (27, 775065), (45, 465039), (81, 258355), (135, 155013), (163, 128385), (317, 66015), (405, 51671), (489, 42795), (815, 25677), (951, 22005), (1467, 14265), (1585, 13203), (2445, 8559), (2853, 7335), (4401, 4755)]