12961904

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{19759}}^1$

素因数の和:19808

約数の個数: 20

約数和(自身を含む): 25727520

約数和(自身を除く): 12765616

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 19759, 39518, 79036, 158072, 316144, 810119, 1620238, 3240476, 6480952, 12961904]

約数ペア:

[(1, 12961904), (2, 6480952), (4, 3240476), (8, 1620238), (16, 810119), (41, 316144), (82, 158072), (164, 79036), (328, 39518), (656, 19759)]