28009990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{7759}}^1$

素因数の和:7804

約数の個数: 24

約数和(自身を含む): 53218080

約数和(自身を除く): 25208090

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 361, 722, 1805, 3610, 7759, 15518, 38795, 77590, 147421, 294842, 737105, 1474210, 2800999, 5601998, 14004995, 28009990]

約数ペア:

[(1, 28009990), (2, 14004995), (5, 5601998), (10, 2800999), (19, 1474210), (38, 737105), (95, 294842), (190, 147421), (361, 77590), (722, 38795), (1805, 15518), (3610, 7759)]