21567951

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 14284593

約数列:

[1, 3, 9, 17, 23, 27, 51, 69, 81, 153, 207, 227, 243, 391, 459, 621, 681, 1173, 1377, 1863, 2043, 3519, 3859, 4131, 5221, 5589, 6129, 10557, 11577, 15663, 18387, 31671, 34731, 46989, 55161, 88757, 95013, 104193, 140967, 266271, 312579, 422901, 798813, 937737, 1268703, 2396439, 7189317, 21567951]

約数ペア:

[(1, 21567951), (3, 7189317), (9, 2396439), (17, 1268703), (23, 937737), (27, 798813), (51, 422901), (69, 312579), (81, 266271), (153, 140967), (207, 104193), (227, 95013), (243, 88757), (391, 55161), (459, 46989), (621, 34731), (681, 31671), (1173, 18387), (1377, 15663), (1863, 11577), (2043, 10557), (3519, 6129), (3859, 5589), (4131, 5221)]