21148281

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30517}}^1$

素因数の和:30541

約数の個数: 24

約数和(自身を含む): 38086464

約数和(自身を除く): 16938183

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30517, 91551, 213619, 274653, 335687, 640857, 1007061, 1922571, 2349809, 3021183, 7049427, 21148281]

約数ペア:

[(1, 21148281), (3, 7049427), (7, 3021183), (9, 2349809), (11, 1922571), (21, 1007061), (33, 640857), (63, 335687), (77, 274653), (99, 213619), (231, 91551), (693, 30517)]