21008889797

素因数分解:

$7^2\times {\mathrm{233}}^1\times {\mathrm{347}}^1\times {\mathrm{5303}}^1$

素因数の和:5897

約数の個数: 24

約数和(自身を含む): 24619173696

約数和(自身を除く): 3610283899

約数列:

[1, 7, 49, 233, 347, 1631, 2429, 5303, 11417, 17003, 37121, 80851, 259847, 565957, 1235599, 1840141, 3961699, 8649193, 12880987, 60544351, 90166909, 428752853, 3001269971, 21008889797]

約数ペア:

[(1, 21008889797), (7, 3001269971), (49, 428752853), (233, 90166909), (347, 60544351), (1631, 12880987), (2429, 8649193), (5303, 3961699), (11417, 1840141), (17003, 1235599), (37121, 565957), (80851, 259847)]