20989262

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{4153}}^1$

素因数の和:4200

約数の個数: 24

約数和(自身を含む): 37984176

約数和(自身を除く): 16994914

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 361, 722, 2527, 4153, 5054, 8306, 29071, 58142, 78907, 157814, 552349, 1104698, 1499233, 2998466, 10494631, 20989262]

約数ペア:

[(1, 20989262), (2, 10494631), (7, 2998466), (14, 1499233), (19, 1104698), (38, 552349), (133, 157814), (266, 78907), (361, 58142), (722, 29071), (2527, 8306), (4153, 5054)]