2989720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1823}}^1$

素因数の和:1875

約数の個数: 32

約数和(自身を含む): 6894720

約数和(自身を除く): 3905000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 1823, 3646, 7292, 9115, 14584, 18230, 36460, 72920, 74743, 149486, 298972, 373715, 597944, 747430, 1494860, 2989720]

約数ペア:

[(1, 2989720), (2, 1494860), (4, 747430), (5, 597944), (8, 373715), (10, 298972), (20, 149486), (40, 74743), (41, 72920), (82, 36460), (164, 18230), (205, 14584), (328, 9115), (410, 7292), (820, 3646), (1640, 1823)]