20862555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{461}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 17457573

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 431, 461, 1293, 1383, 2155, 2305, 3017, 3227, 6465, 6915, 9051, 9681, 15085, 16135, 45255, 48405, 198691, 596073, 993455, 1390837, 2980365, 4172511, 6954185, 20862555]

約数ペア:

[(1, 20862555), (3, 6954185), (5, 4172511), (7, 2980365), (15, 1390837), (21, 993455), (35, 596073), (105, 198691), (431, 48405), (461, 45255), (1293, 16135), (1383, 15085), (2155, 9681), (2305, 9051), (3017, 6915), (3227, 6465)]