8647720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5273}}^1$

素因数の和:5325

約数の個数: 32

約数和(自身を含む): 19935720

約数和(自身を除く): 11288000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 5273, 10546, 21092, 26365, 42184, 52730, 105460, 210920, 216193, 432386, 864772, 1080965, 1729544, 2161930, 4323860, 8647720]

約数ペア:

[(1, 8647720), (2, 4323860), (4, 2161930), (5, 1729544), (8, 1080965), (10, 864772), (20, 432386), (40, 216193), (41, 210920), (82, 105460), (164, 52730), (205, 42184), (328, 26365), (410, 21092), (820, 10546), (1640, 5273)]