21011036291

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{53}}^2\times {\mathrm{6637}}^1$

素因数の和:6780

約数の個数: 36

約数和(自身を含む): 25998284592

約数和(自身を除く): 4987248301

約数列:

[1, 7, 23, 49, 53, 161, 371, 1127, 1219, 2597, 2809, 6637, 8533, 19663, 46459, 59731, 64607, 137641, 152651, 325213, 351761, 452249, 1068557, 2462327, 3165743, 7479899, 8090503, 17236289, 18643333, 56633521, 130503331, 396434647, 428796659, 913523317, 3001576613, 21011036291]

約数ペア:

[(1, 21011036291), (7, 3001576613), (23, 913523317), (49, 428796659), (53, 396434647), (161, 130503331), (371, 56633521), (1127, 18643333), (1219, 17236289), (2597, 8090503), (2809, 7479899), (6637, 3165743), (8533, 2462327), (19663, 1068557), (46459, 452249), (59731, 351761), (64607, 325213), (137641, 152651)]