21707937

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 35093760

約数和(自身を除く): 13385823

約数列:

[1, 3, 9, 19, 37, 47, 57, 73, 111, 141, 171, 219, 333, 423, 657, 703, 893, 1387, 1739, 2109, 2679, 2701, 3431, 4161, 5217, 6327, 8037, 8103, 10293, 12483, 15651, 24309, 30879, 33041, 51319, 65189, 99123, 126947, 153957, 195567, 297369, 380841, 461871, 586701, 1142523, 2411993, 7235979, 21707937]

約数ペア:

[(1, 21707937), (3, 7235979), (9, 2411993), (19, 1142523), (37, 586701), (47, 461871), (57, 380841), (73, 297369), (111, 195567), (141, 153957), (171, 126947), (219, 99123), (333, 65189), (423, 51319), (657, 33041), (703, 30879), (893, 24309), (1387, 15651), (1739, 12483), (2109, 10293), (2679, 8103), (2701, 8037), (3431, 6327), (4161, 5217)]