21193669855

素因数分解:

$5^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{1987}}^1$

素因数の和:2383

約数の個数: 32

約数和(自身を含む): 26050752000

約数和(自身を除く): 4857082145

約数列:

[1, 5, 103, 139, 149, 515, 695, 745, 1987, 9935, 14317, 15347, 20711, 71585, 76735, 103555, 204661, 276193, 296063, 1023305, 1380965, 1480315, 2133233, 10666165, 28447879, 30494489, 41152757, 142239395, 152472445, 205763785, 4238733971, 21193669855]

約数ペア:

[(1, 21193669855), (5, 4238733971), (103, 205763785), (139, 152472445), (149, 142239395), (515, 41152757), (695, 30494489), (745, 28447879), (1987, 10666165), (9935, 2133233), (14317, 1480315), (15347, 1380965), (20711, 1023305), (71585, 296063), (76735, 276193), (103555, 204661)]