247451421

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{4663}}^1$

素因数の和:4718

約数の個数: 36

約数和(自身を含む): 405152352

約数和(自身を除く): 157700931

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 361, 399, 931, 1083, 2527, 2793, 4663, 7581, 13989, 17689, 32641, 53067, 88597, 97923, 228487, 265791, 620179, 685461, 1683343, 1860537, 4341253, 5050029, 11783401, 13023759, 35350203, 82483807, 247451421]

約数ペア:

[(1, 247451421), (3, 82483807), (7, 35350203), (19, 13023759), (21, 11783401), (49, 5050029), (57, 4341253), (133, 1860537), (147, 1683343), (361, 685461), (399, 620179), (931, 265791), (1083, 228487), (2527, 97923), (2793, 88597), (4663, 53067), (7581, 32641), (13989, 17689)]