20938659

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 33191424

約数和(自身を除く): 12252765

約数列:

[1, 3, 7, 21, 41, 83, 123, 249, 287, 293, 581, 861, 879, 1743, 2051, 3403, 6153, 10209, 12013, 23821, 24319, 36039, 71463, 72957, 84091, 170233, 252273, 510699, 997079, 2991237, 6979553, 20938659]

約数ペア:

[(1, 20938659), (3, 6979553), (7, 2991237), (21, 997079), (41, 510699), (83, 252273), (123, 170233), (249, 84091), (287, 72957), (293, 71463), (581, 36039), (861, 24319), (879, 23821), (1743, 12013), (2051, 10209), (3403, 6153)]