20748285

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8089}}^1$

素因数の和:8122

約数の個数: 32

約数和(自身を含む): 38832000

約数和(自身を除く): 18083715

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8089, 24267, 40445, 72801, 121335, 153691, 218403, 364005, 461073, 768455, 1092015, 1383219, 2305365, 4149657, 6916095, 20748285]

約数ペア:

[(1, 20748285), (3, 6916095), (5, 4149657), (9, 2305365), (15, 1383219), (19, 1092015), (27, 768455), (45, 461073), (57, 364005), (95, 218403), (135, 153691), (171, 121335), (285, 72801), (513, 40445), (855, 24267), (2565, 8089)]