18903915

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{8237}}^1$

素因数の和:8268

約数の個数: 32

約数和(自身を含む): 35588160

約数和(自身を除く): 16684245

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 8237, 24711, 41185, 74133, 123555, 140029, 222399, 370665, 420087, 700145, 1111995, 1260261, 2100435, 3780783, 6301305, 18903915]

約数ペア:

[(1, 18903915), (3, 6301305), (5, 3780783), (9, 2100435), (15, 1260261), (17, 1111995), (27, 700145), (45, 420087), (51, 370665), (85, 222399), (135, 140029), (153, 123555), (255, 74133), (459, 41185), (765, 24711), (2295, 8237)]