78807140

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{12589}}^1$

素因数の和:12911

約数の個数: 24

約数和(自身を含む): 166036920

約数和(自身を除く): 87229780

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1565, 3130, 6260, 12589, 25178, 50356, 62945, 125890, 251780, 3940357, 7880714, 15761428, 19701785, 39403570, 78807140]

約数ペア:

[(1, 78807140), (2, 39403570), (4, 19701785), (5, 15761428), (10, 7880714), (20, 3940357), (313, 251780), (626, 125890), (1252, 62945), (1565, 50356), (3130, 25178), (6260, 12589)]