21208649

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{4111}}^1$

素因数の和:4196

約数の個数: 16

約数和(自身を含む): 26843136

約数和(自身を除く): 5634487

約数列:

[1, 7, 11, 67, 77, 469, 737, 4111, 5159, 28777, 45221, 275437, 316547, 1928059, 3029807, 21208649]

約数ペア:

[(1, 21208649), (7, 3029807), (11, 1928059), (67, 316547), (77, 275437), (469, 45221), (737, 28777), (4111, 5159)]