21031780605

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7497961}}^1$

素因数の和:7497997

約数の個数: 32

約数和(自身を含む): 38869435008

約数和(自身を除く): 17837654403

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7497961, 22493883, 37489805, 82477571, 112469415, 127465337, 247432713, 382396011, 412387855, 637326685, 1237163565, 1402118707, 1911980055, 4206356121, 7010593535, 21031780605]

約数ペア:

[(1, 21031780605), (3, 7010593535), (5, 4206356121), (11, 1911980055), (15, 1402118707), (17, 1237163565), (33, 637326685), (51, 412387855), (55, 382396011), (85, 247432713), (165, 127465337), (187, 112469415), (255, 82477571), (561, 37489805), (935, 22493883), (2805, 7497961)]