21401253

素因数分解:

$3^6\times {\mathrm{31}}^1\times {\mathrm{947}}^1$

素因数の和:996

約数の個数: 28

約数和(自身を含む): 33157248

約数和(自身を除く): 11755995

約数列:

[1, 3, 9, 27, 31, 81, 93, 243, 279, 729, 837, 947, 2511, 2841, 7533, 8523, 22599, 25569, 29357, 76707, 88071, 230121, 264213, 690363, 792639, 2377917, 7133751, 21401253]

約数ペア:

[(1, 21401253), (3, 7133751), (9, 2377917), (27, 792639), (31, 690363), (81, 264213), (93, 230121), (243, 88071), (279, 76707), (729, 29357), (837, 25569), (947, 22599), (2511, 8523), (2841, 7533)]