21000751915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{773}}^1\times {\mathrm{37997}}^1$

素因数の和:38799

約数の個数: 32

約数和(自身を含む): 29645735616

約数和(自身を除く): 8644983701

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 773, 3865, 8503, 10049, 37997, 42515, 50245, 110539, 189985, 417967, 493961, 552695, 2089835, 2469805, 5433571, 27167855, 29371681, 146858405, 323088491, 381831853, 1615442455, 1909159265, 4200150383, 21000751915]

約数ペア:

[(1, 21000751915), (5, 4200150383), (11, 1909159265), (13, 1615442455), (55, 381831853), (65, 323088491), (143, 146858405), (715, 29371681), (773, 27167855), (3865, 5433571), (8503, 2469805), (10049, 2089835), (37997, 552695), (42515, 493961), (50245, 417967), (110539, 189985)]