66720784

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18869}}^1$

素因数の和:18907

約数の個数: 40

約数和(自身を含む): 147412440

約数和(自身を除く): 80691656

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 18869, 37738, 75476, 150952, 245297, 301904, 320773, 490594, 641546, 981188, 1283092, 1962376, 2566184, 3924752, 4170049, 5132368, 8340098, 16680196, 33360392, 66720784]

約数ペア:

[(1, 66720784), (2, 33360392), (4, 16680196), (8, 8340098), (13, 5132368), (16, 4170049), (17, 3924752), (26, 2566184), (34, 1962376), (52, 1283092), (68, 981188), (104, 641546), (136, 490594), (208, 320773), (221, 301904), (272, 245297), (442, 150952), (884, 75476), (1768, 37738), (3536, 18869)]