21092109

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 31044480

約数和(自身を除く): 9952371

約数列:

[1, 3, 19, 37, 57, 73, 111, 137, 219, 411, 703, 1387, 2109, 2603, 2701, 4161, 5069, 7809, 8103, 10001, 15207, 30003, 51319, 96311, 153957, 190019, 288933, 370037, 570057, 1110111, 7030703, 21092109]

約数ペア:

[(1, 21092109), (3, 7030703), (19, 1110111), (37, 570057), (57, 370037), (73, 288933), (111, 190019), (137, 153957), (219, 96311), (411, 51319), (703, 30003), (1387, 15207), (2109, 10001), (2603, 8103), (2701, 7809), (4161, 5069)]