1282128520

素因数分解:

$2^3\times 5^1\times {\mathrm{2389}}^1\times {\mathrm{13417}}^1$

素因数の和:15817

約数の個数: 32

約数和(自身を含む): 2886211800

約数和(自身を除く): 1604083280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2389, 4778, 9556, 11945, 13417, 19112, 23890, 26834, 47780, 53668, 67085, 95560, 107336, 134170, 268340, 536680, 32053213, 64106426, 128212852, 160266065, 256425704, 320532130, 641064260, 1282128520]

約数ペア:

[(1, 1282128520), (2, 641064260), (4, 320532130), (5, 256425704), (8, 160266065), (10, 128212852), (20, 64106426), (40, 32053213), (2389, 536680), (4778, 268340), (9556, 134170), (11945, 107336), (13417, 95560), (19112, 67085), (23890, 53668), (26834, 47780)]