21771915

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5737}}^1$

素因数の和:5779

約数の個数: 32

約数和(自身を含む): 39661056

約数和(自身を除く): 17889141

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 5737, 17211, 28685, 63107, 86055, 131951, 189321, 315535, 395853, 659755, 946605, 1451461, 1979265, 4354383, 7257305, 21771915]

約数ペア:

[(1, 21771915), (3, 7257305), (5, 4354383), (11, 1979265), (15, 1451461), (23, 946605), (33, 659755), (55, 395853), (69, 315535), (115, 189321), (165, 131951), (253, 86055), (345, 63107), (759, 28685), (1265, 17211), (3795, 5737)]