21158277

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 33331200

約数和(自身を除く): 12172923

約数列:

[1, 3, 7, 21, 61, 83, 183, 199, 249, 427, 581, 597, 1281, 1393, 1743, 4179, 5063, 12139, 15189, 16517, 35441, 36417, 49551, 84973, 106323, 115619, 254919, 346857, 1007537, 3022611, 7052759, 21158277]

約数ペア:

[(1, 21158277), (3, 7052759), (7, 3022611), (21, 1007537), (61, 346857), (83, 254919), (183, 115619), (199, 106323), (249, 84973), (427, 49551), (581, 36417), (597, 35441), (1281, 16517), (1393, 15189), (1743, 12139), (4179, 5063)]