19199909905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{50207}}^1$

素因数の和:50649

約数の個数: 32

約数和(自身を含む): 26678522880

約数和(自身を除く): 7478612975

約数列:

[1, 5, 11, 17, 55, 85, 187, 409, 935, 2045, 4499, 6953, 22495, 34765, 50207, 76483, 251035, 382415, 552277, 853519, 2761385, 4267595, 9388709, 20534663, 46943545, 102673315, 225881293, 349089271, 1129406465, 1745446355, 3839981981, 19199909905]

約数ペア:

[(1, 19199909905), (5, 3839981981), (11, 1745446355), (17, 1129406465), (55, 349089271), (85, 225881293), (187, 102673315), (409, 46943545), (935, 20534663), (2045, 9388709), (4499, 4267595), (6953, 2761385), (22495, 853519), (34765, 552277), (50207, 382415), (76483, 251035)]