221399703

素因数分解:

$3^3\times 7^1\times {\mathrm{1171427}}^1$

素因数の和:1171443

約数の個数: 16

約数和(自身を含む): 374856960

約数和(自身を除く): 153457257

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 1171427, 3514281, 8199989, 10542843, 24599967, 31628529, 73799901, 221399703]

約数ペア:

[(1, 221399703), (3, 73799901), (7, 31628529), (9, 24599967), (21, 10542843), (27, 8199989), (63, 3514281), (189, 1171427)]