81781595

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 116899200

約数和(自身を除く): 35117605

約数列:

[1, 5, 7, 29, 35, 145, 197, 203, 409, 985, 1015, 1379, 2045, 2863, 5713, 6895, 11861, 14315, 28565, 39991, 59305, 80573, 83027, 199955, 402865, 415135, 564011, 2336617, 2820055, 11683085, 16356319, 81781595]

約数ペア:

[(1, 81781595), (5, 16356319), (7, 11683085), (29, 2820055), (35, 2336617), (145, 564011), (197, 415135), (203, 402865), (409, 199955), (985, 83027), (1015, 80573), (1379, 59305), (2045, 39991), (2863, 28565), (5713, 14315), (6895, 11861)]