21142395

素因数分解:

$3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5279}}^1$

素因数の和:5379

約数の個数: 24

約数和(自身を含む): 37065600

約数和(自身を除く): 15923205

約数列:

[1, 3, 5, 9, 15, 45, 89, 267, 445, 801, 1335, 4005, 5279, 15837, 26395, 47511, 79185, 237555, 469831, 1409493, 2349155, 4228479, 7047465, 21142395]

約数ペア:

[(1, 21142395), (3, 7047465), (5, 4228479), (9, 2349155), (15, 1409493), (45, 469831), (89, 237555), (267, 79185), (445, 47511), (801, 26395), (1335, 15837), (4005, 5279)]