20054895

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{491}}^1$

素因数の和:895

約数の個数: 32

約数和(自身を含む): 36840960

約数和(自身を除く): 16786065

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 389, 491, 1167, 1473, 1945, 2455, 2723, 3437, 5835, 7365, 8169, 10311, 13615, 17185, 40845, 51555, 190999, 572997, 954995, 1336993, 2864985, 4010979, 6684965, 20054895]

約数ペア:

[(1, 20054895), (3, 6684965), (5, 4010979), (7, 2864985), (15, 1336993), (21, 954995), (35, 572997), (105, 190999), (389, 51555), (491, 40845), (1167, 17185), (1473, 13615), (1945, 10311), (2455, 8169), (2723, 7365), (3437, 5835)]