16987120

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5179}}^1$

素因数の和:5233

約数の個数: 40

約数和(自身を含む): 40466160

約数和(自身を除く): 23479040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5179, 10358, 20716, 25895, 41432, 51790, 82864, 103580, 207160, 212339, 414320, 424678, 849356, 1061695, 1698712, 2123390, 3397424, 4246780, 8493560, 16987120]

約数ペア:

[(1, 16987120), (2, 8493560), (4, 4246780), (5, 3397424), (8, 2123390), (10, 1698712), (16, 1061695), (20, 849356), (40, 424678), (41, 414320), (80, 212339), (82, 207160), (164, 103580), (205, 82864), (328, 51790), (410, 41432), (656, 25895), (820, 20716), (1640, 10358), (3280, 5179)]