21116943

素因数分解:

$3^6\times {\mathrm{83}}^1\times {\mathrm{349}}^1$

素因数の和:450

約数の個数: 28

約数和(自身を含む): 32134200

約数和(自身を除く): 11017257

約数列:

[1, 3, 9, 27, 81, 83, 243, 249, 349, 729, 747, 1047, 2241, 3141, 6723, 9423, 20169, 28269, 28967, 60507, 84807, 86901, 254421, 260703, 782109, 2346327, 7038981, 21116943]

約数ペア:

[(1, 21116943), (3, 7038981), (9, 2346327), (27, 782109), (81, 260703), (83, 254421), (243, 86901), (249, 84807), (349, 60507), (729, 28967), (747, 28269), (1047, 20169), (2241, 9423), (3141, 6723)]