262480

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1$

素因数の和:223

約数の個数: 40

約数和(自身を含む): 649512

約数和(自身を除く): 387032

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 193, 272, 340, 386, 680, 772, 965, 1360, 1544, 1930, 3088, 3281, 3860, 6562, 7720, 13124, 15440, 16405, 26248, 32810, 52496, 65620, 131240, 262480]

約数ペア:

[(1, 262480), (2, 131240), (4, 65620), (5, 52496), (8, 32810), (10, 26248), (16, 16405), (17, 15440), (20, 13124), (34, 7720), (40, 6562), (68, 3860), (80, 3281), (85, 3088), (136, 1930), (170, 1544), (193, 1360), (272, 965), (340, 772), (386, 680)]