20630979

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 34145280

約数和(自身を除く): 13514301

約数列:

[1, 3, 9, 17, 19, 47, 51, 57, 141, 151, 153, 171, 323, 423, 453, 799, 893, 969, 1359, 2397, 2567, 2679, 2869, 2907, 7097, 7191, 7701, 8037, 8607, 15181, 21291, 23103, 25821, 45543, 48773, 63873, 120649, 134843, 136629, 146319, 361947, 404529, 438957, 1085841, 1213587, 2292331, 6876993, 20630979]

約数ペア:

[(1, 20630979), (3, 6876993), (9, 2292331), (17, 1213587), (19, 1085841), (47, 438957), (51, 404529), (57, 361947), (141, 146319), (151, 136629), (153, 134843), (171, 120649), (323, 63873), (423, 48773), (453, 45543), (799, 25821), (893, 23103), (969, 21291), (1359, 15181), (2397, 8607), (2567, 8037), (2679, 7701), (2869, 7191), (2907, 7097)]