21313257

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{263}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 13357335

約数列:

[1, 3, 7, 17, 21, 51, 119, 227, 263, 357, 681, 789, 1589, 1841, 3859, 4471, 4767, 5523, 11577, 13413, 27013, 31297, 59701, 81039, 93891, 179103, 417907, 1014917, 1253721, 3044751, 7104419, 21313257]

約数ペア:

[(1, 21313257), (3, 7104419), (7, 3044751), (17, 1253721), (21, 1014917), (51, 417907), (119, 179103), (227, 93891), (263, 81039), (357, 59701), (681, 31297), (789, 27013), (1589, 13413), (1841, 11577), (3859, 5523), (4471, 4767)]