68744840

素因数分解:

$2^3\times 5^1\times {\mathrm{1301}}^1\times {\mathrm{1321}}^1$

素因数の和:2633

約数の個数: 32

約数和(自身を含む): 154911960

約数和(自身を除く): 86167120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1301, 1321, 2602, 2642, 5204, 5284, 6505, 6605, 10408, 10568, 13010, 13210, 26020, 26420, 52040, 52840, 1718621, 3437242, 6874484, 8593105, 13748968, 17186210, 34372420, 68744840]

約数ペア:

[(1, 68744840), (2, 34372420), (4, 17186210), (5, 13748968), (8, 8593105), (10, 6874484), (20, 3437242), (40, 1718621), (1301, 52840), (1321, 52040), (2602, 26420), (2642, 26020), (5204, 13210), (5284, 13010), (6505, 10568), (6605, 10408)]