20730897

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{439}}^1$

素因数の和:515

約数の個数: 40

約数和(自身を含む): 34499520

約数和(自身を除く): 13768623

約数列:

[1, 3, 9, 11, 27, 33, 53, 81, 99, 159, 297, 439, 477, 583, 891, 1317, 1431, 1749, 3951, 4293, 4829, 5247, 11853, 14487, 15741, 23267, 35559, 43461, 47223, 69801, 130383, 209403, 255937, 391149, 628209, 767811, 1884627, 2303433, 6910299, 20730897]

約数ペア:

[(1, 20730897), (3, 6910299), (9, 2303433), (11, 1884627), (27, 767811), (33, 628209), (53, 391149), (81, 255937), (99, 209403), (159, 130383), (297, 69801), (439, 47223), (477, 43461), (583, 35559), (891, 23267), (1317, 15741), (1431, 14487), (1749, 11853), (3951, 5247), (4293, 4829)]