251979903

素因数分解:

$3^4\times 7^2\times {\mathrm{63487}}^1$

素因数の和:63513

約数の個数: 30

約数和(自身を含む): 437876736

約数和(自身を除く): 185896833

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 63487, 190461, 444409, 571383, 1333227, 1714149, 3110863, 3999681, 5142447, 9332589, 11999043, 27997767, 35997129, 83993301, 251979903]

約数ペア:

[(1, 251979903), (3, 83993301), (7, 35997129), (9, 27997767), (21, 11999043), (27, 9332589), (49, 5142447), (63, 3999681), (81, 3110863), (147, 1714149), (189, 1333227), (441, 571383), (567, 444409), (1323, 190461), (3969, 63487)]