21139941755

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{911}}^1\times {\mathrm{149711}}^1$

素因数の和:150658

約数の個数: 16

約数和(自身を含む): 26215170048

約数和(自身を除く): 5075228293

約数列:

[1, 5, 31, 155, 911, 4555, 28241, 141205, 149711, 748555, 4641041, 23205205, 136386721, 681933605, 4227988351, 21139941755]

約数ペア:

[(1, 21139941755), (5, 4227988351), (31, 681933605), (155, 136386721), (911, 23205205), (4555, 4641041), (28241, 748555), (141205, 149711)]