4050000005

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{191173}}^1$

素因数の和:191420

約数の個数: 16

約数和(自身を含む): 5138757120

約数和(自身を除く): 1088757115

約数列:

[1, 5, 19, 95, 223, 1115, 4237, 21185, 191173, 955865, 3632287, 18161435, 42631579, 213157895, 810000001, 4050000005]

約数ペア:

[(1, 4050000005), (5, 810000001), (19, 213157895), (95, 42631579), (223, 18161435), (1115, 3632287), (4237, 955865), (21185, 191173)]