21329775

素因数分解:

$3^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{2017}}^1$

素因数の和:2080

約数の個数: 36

約数和(自身を含む): 39036192

約数和(自身を除く): 17706417

約数列:

[1, 3, 5, 9, 15, 25, 45, 47, 75, 141, 225, 235, 423, 705, 1175, 2017, 2115, 3525, 6051, 10085, 10575, 18153, 30255, 50425, 90765, 94799, 151275, 284397, 453825, 473995, 853191, 1421985, 2369975, 4265955, 7109925, 21329775]

約数ペア:

[(1, 21329775), (3, 7109925), (5, 4265955), (9, 2369975), (15, 1421985), (25, 853191), (45, 473995), (47, 453825), (75, 284397), (141, 151275), (225, 94799), (235, 90765), (423, 50425), (705, 30255), (1175, 18153), (2017, 10575), (2115, 10085), (3525, 6051)]