28556740

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 61758144

約数和(自身を除く): 33201404

約数列:

[1, 2, 4, 5, 10, 20, 67, 101, 134, 202, 211, 268, 335, 404, 422, 505, 670, 844, 1010, 1055, 1340, 2020, 2110, 4220, 6767, 13534, 14137, 21311, 27068, 28274, 33835, 42622, 56548, 67670, 70685, 85244, 106555, 135340, 141370, 213110, 282740, 426220, 1427837, 2855674, 5711348, 7139185, 14278370, 28556740]

約数ペア:

[(1, 28556740), (2, 14278370), (4, 7139185), (5, 5711348), (10, 2855674), (20, 1427837), (67, 426220), (101, 282740), (134, 213110), (202, 141370), (211, 135340), (268, 106555), (335, 85244), (404, 70685), (422, 67670), (505, 56548), (670, 42622), (844, 33835), (1010, 28274), (1055, 27068), (1340, 21311), (2020, 14137), (2110, 13534), (4220, 6767)]