20511555

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{773}}^1$

素因数の和:871

約数の個数: 32

約数和(自身を含む): 34551360

約数和(自身を除く): 14039805

約数列:

[1, 3, 5, 15, 29, 61, 87, 145, 183, 305, 435, 773, 915, 1769, 2319, 3865, 5307, 8845, 11595, 22417, 26535, 47153, 67251, 112085, 141459, 235765, 336255, 707295, 1367437, 4102311, 6837185, 20511555]

約数ペア:

[(1, 20511555), (3, 6837185), (5, 4102311), (15, 1367437), (29, 707295), (61, 336255), (87, 235765), (145, 141459), (183, 112085), (305, 67251), (435, 47153), (773, 26535), (915, 22417), (1769, 11595), (2319, 8845), (3865, 5307)]