21017998

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:348

約数の個数: 32

約数和(自身を含む): 34572096

約数和(自身を除く): 13554098

約数列:

[1, 2, 23, 37, 46, 53, 74, 106, 233, 466, 851, 1219, 1702, 1961, 2438, 3922, 5359, 8621, 10718, 12349, 17242, 24698, 45103, 90206, 198283, 284027, 396566, 456913, 568054, 913826, 10508999, 21017998]

約数ペア:

[(1, 21017998), (2, 10508999), (23, 913826), (37, 568054), (46, 456913), (53, 396566), (74, 284027), (106, 198283), (233, 90206), (466, 45103), (851, 24698), (1219, 17242), (1702, 12349), (1961, 10718), (2438, 8621), (3922, 5359)]