21674320

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15937}}^1$

素因数の和:15967

約数の個数: 40

約数和(自身を含む): 53360424

約数和(自身を除く): 31686104

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15937, 31874, 63748, 79685, 127496, 159370, 254992, 270929, 318740, 541858, 637480, 1083716, 1274960, 1354645, 2167432, 2709290, 4334864, 5418580, 10837160, 21674320]

約数ペア:

[(1, 21674320), (2, 10837160), (4, 5418580), (5, 4334864), (8, 2709290), (10, 2167432), (16, 1354645), (17, 1274960), (20, 1083716), (34, 637480), (40, 541858), (68, 318740), (80, 270929), (85, 254992), (136, 159370), (170, 127496), (272, 79685), (340, 63748), (680, 31874), (1360, 15937)]