19991567211

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{551233}}^1$

素因数の和:551411

約数の個数: 32

約数和(自身を含む): 33444469248

約数和(自身を除く): 13452902037

約数列:

[1, 3, 7, 11, 21, 33, 77, 157, 231, 471, 1099, 1727, 3297, 5181, 12089, 36267, 551233, 1653699, 3858631, 6063563, 11575893, 18190689, 42444941, 86543581, 127334823, 259630743, 605805067, 951979391, 1817415201, 2855938173, 6663855737, 19991567211]

約数ペア:

[(1, 19991567211), (3, 6663855737), (7, 2855938173), (11, 1817415201), (21, 951979391), (33, 605805067), (77, 259630743), (157, 127334823), (231, 86543581), (471, 42444941), (1099, 18190689), (1727, 11575893), (3297, 6063563), (5181, 3858631), (12089, 1653699), (36267, 551233)]