18880047

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{13711}}^1$

素因数の和:13740

約数の個数: 20

約数和(自身を含む): 29864736

約数和(自身を除く): 10984689

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 13711, 41133, 123399, 233087, 370197, 699261, 1110591, 2097783, 6293349, 18880047]

約数ペア:

[(1, 18880047), (3, 6293349), (9, 2097783), (17, 1110591), (27, 699261), (51, 370197), (81, 233087), (153, 123399), (459, 41133), (1377, 13711)]