21497240

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{9109}}^1$

素因数の和:9179

約数の個数: 32

約数和(自身を含む): 49194000

約数和(自身を除く): 27696760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 9109, 18218, 36436, 45545, 72872, 91090, 182180, 364360, 537431, 1074862, 2149724, 2687155, 4299448, 5374310, 10748620, 21497240]

約数ペア:

[(1, 21497240), (2, 10748620), (4, 5374310), (5, 4299448), (8, 2687155), (10, 2149724), (20, 1074862), (40, 537431), (59, 364360), (118, 182180), (236, 91090), (295, 72872), (472, 45545), (590, 36436), (1180, 18218), (2360, 9109)]