21155883

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43801}}^1$

素因数の和:43834

約数の個数: 16

約数和(自身を含む): 33639936

約数和(自身を除く): 12484053

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 43801, 131403, 306607, 919821, 1007423, 3022269, 7051961, 21155883]

約数ペア:

[(1, 21155883), (3, 7051961), (7, 3022269), (21, 1007423), (23, 919821), (69, 306607), (161, 131403), (483, 43801)]