1321690360

素因数分解:

$2^3\times 5^1\times {\mathrm{2389}}^1\times {\mathrm{13831}}^1$

素因数の和:16231

約数の個数: 32

約数和(自身を含む): 2975263200

約数和(自身を除く): 1653572840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2389, 4778, 9556, 11945, 13831, 19112, 23890, 27662, 47780, 55324, 69155, 95560, 110648, 138310, 276620, 553240, 33042259, 66084518, 132169036, 165211295, 264338072, 330422590, 660845180, 1321690360]

約数ペア:

[(1, 1321690360), (2, 660845180), (4, 330422590), (5, 264338072), (8, 165211295), (10, 132169036), (20, 66084518), (40, 33042259), (2389, 553240), (4778, 276620), (9556, 138310), (11945, 110648), (13831, 95560), (19112, 69155), (23890, 55324), (27662, 47780)]