21974139

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{307}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 35777280

約数和(自身を除く): 13803141

約数列:

[1, 3, 9, 11, 27, 33, 99, 241, 297, 307, 723, 921, 2169, 2651, 2763, 3377, 6507, 7953, 8289, 10131, 23859, 30393, 71577, 73987, 91179, 221961, 665883, 813857, 1997649, 2441571, 7324713, 21974139]

約数ペア:

[(1, 21974139), (3, 7324713), (9, 2441571), (11, 1997649), (27, 813857), (33, 665883), (99, 221961), (241, 91179), (297, 73987), (307, 71577), (723, 30393), (921, 23859), (2169, 10131), (2651, 8289), (2763, 7953), (3377, 6507)]