21445959

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 10902201

約数列:

[1, 3, 17, 23, 47, 51, 69, 141, 389, 391, 799, 1081, 1167, 1173, 2397, 3243, 6613, 8947, 18283, 18377, 19839, 26841, 54849, 55131, 152099, 310811, 420509, 456297, 932433, 1261527, 7148653, 21445959]

約数ペア:

[(1, 21445959), (3, 7148653), (17, 1261527), (23, 932433), (47, 456297), (51, 420509), (69, 310811), (141, 152099), (389, 55131), (391, 54849), (799, 26841), (1081, 19839), (1167, 18377), (1173, 18283), (2397, 8947), (3243, 6613)]