19845518

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4157}}^1$

素因数の和:4208

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 18474610

約数列:

[1, 2, 7, 11, 14, 22, 31, 62, 77, 154, 217, 341, 434, 682, 2387, 4157, 4774, 8314, 29099, 45727, 58198, 91454, 128867, 257734, 320089, 640178, 902069, 1417537, 1804138, 2835074, 9922759, 19845518]

約数ペア:

[(1, 19845518), (2, 9922759), (7, 2835074), (11, 1804138), (14, 1417537), (22, 902069), (31, 640178), (62, 320089), (77, 257734), (154, 128867), (217, 91454), (341, 58198), (434, 45727), (682, 29099), (2387, 8314), (4157, 4774)]