20794851

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{811}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 38508288

約数和(自身を除く): 17713437

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 77, 99, 111, 231, 259, 333, 407, 693, 777, 811, 1221, 2331, 2433, 2849, 3663, 5677, 7299, 8547, 8921, 17031, 25641, 26763, 30007, 51093, 62447, 80289, 90021, 187341, 210049, 270063, 330077, 562023, 630147, 990231, 1890441, 2310539, 2970693, 6931617, 20794851]

約数ペア:

[(1, 20794851), (3, 6931617), (7, 2970693), (9, 2310539), (11, 1890441), (21, 990231), (33, 630147), (37, 562023), (63, 330077), (77, 270063), (99, 210049), (111, 187341), (231, 90021), (259, 80289), (333, 62447), (407, 51093), (693, 30007), (777, 26763), (811, 25641), (1221, 17031), (2331, 8921), (2433, 8547), (2849, 7299), (3663, 5677)]