664144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:155

約数の個数: 40

約数和(自身を含む): 1444352

約数和(自身を除く): 780208

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 103, 104, 124, 206, 208, 248, 403, 412, 496, 806, 824, 1339, 1612, 1648, 2678, 3193, 3224, 5356, 6386, 6448, 10712, 12772, 21424, 25544, 41509, 51088, 83018, 166036, 332072, 664144]

約数ペア:

[(1, 664144), (2, 332072), (4, 166036), (8, 83018), (13, 51088), (16, 41509), (26, 25544), (31, 21424), (52, 12772), (62, 10712), (103, 6448), (104, 6386), (124, 5356), (206, 3224), (208, 3193), (248, 2678), (403, 1648), (412, 1612), (496, 1339), (806, 824)]