1330640020

素因数分解:

$2^2\times 5^1\times {\mathrm{1979}}^1\times {\mathrm{33619}}^1$

素因数の和:35607

約数の個数: 24

約数和(自身を含む): 2795839200

約数和(自身を除く): 1465199180

約数列:

[1, 2, 4, 5, 10, 20, 1979, 3958, 7916, 9895, 19790, 33619, 39580, 67238, 134476, 168095, 336190, 672380, 66532001, 133064002, 266128004, 332660005, 665320010, 1330640020]

約数ペア:

[(1, 1330640020), (2, 665320010), (4, 332660005), (5, 266128004), (10, 133064002), (20, 66532001), (1979, 672380), (3958, 336190), (7916, 168095), (9895, 134476), (19790, 67238), (33619, 39580)]