18539560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{353}}^1$

素因数の和:478

約数の個数: 64

約数和(自身を含む): 45496080

約数和(自身を除く): 26956520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 101, 104, 130, 202, 260, 353, 404, 505, 520, 706, 808, 1010, 1313, 1412, 1765, 2020, 2626, 2824, 3530, 4040, 4589, 5252, 6565, 7060, 9178, 10504, 13130, 14120, 18356, 22945, 26260, 35653, 36712, 45890, 52520, 71306, 91780, 142612, 178265, 183560, 285224, 356530, 463489, 713060, 926978, 1426120, 1853956, 2317445, 3707912, 4634890, 9269780, 18539560]

約数ペア:

[(1, 18539560), (2, 9269780), (4, 4634890), (5, 3707912), (8, 2317445), (10, 1853956), (13, 1426120), (20, 926978), (26, 713060), (40, 463489), (52, 356530), (65, 285224), (101, 183560), (104, 178265), (130, 142612), (202, 91780), (260, 71306), (353, 52520), (404, 45890), (505, 36712), (520, 35653), (706, 26260), (808, 22945), (1010, 18356), (1313, 14120), (1412, 13130), (1765, 10504), (2020, 9178), (2626, 7060), (2824, 6565), (3530, 5252), (4040, 4589)]