20790105

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{509}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 38188800

約数和(自身を除く): 17398695

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 389, 509, 1167, 1527, 1945, 2545, 2723, 3563, 5835, 7635, 8169, 10689, 13615, 17815, 40845, 53445, 198001, 594003, 990005, 1386007, 2970015, 4158021, 6930035, 20790105]

約数ペア:

[(1, 20790105), (3, 6930035), (5, 4158021), (7, 2970015), (15, 1386007), (21, 990005), (35, 594003), (105, 198001), (389, 53445), (509, 40845), (1167, 17815), (1527, 13615), (1945, 10689), (2545, 8169), (2723, 7635), (3563, 5835)]