21975153

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{103}}^1\times {\mathrm{197}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 31382208

約数和(自身を除く): 9407055

約数列:

[1, 3, 19, 57, 103, 197, 309, 361, 591, 1083, 1957, 3743, 5871, 11229, 20291, 37183, 60873, 71117, 111549, 213351, 385529, 1156587, 7325051, 21975153]

約数ペア:

[(1, 21975153), (3, 7325051), (19, 1156587), (57, 385529), (103, 213351), (197, 111549), (309, 71117), (361, 60873), (591, 37183), (1083, 20291), (1957, 11229), (3743, 5871)]