2019857715

素因数分解:

$3^4\times 5^1\times {\mathrm{4987303}}^1$

素因数の和:4987320

約数の個数: 20

約数和(自身を含む): 3620782704

約数和(自身を除く): 1600924989

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4987303, 14961909, 24936515, 44885727, 74809545, 134657181, 224428635, 403971543, 673285905, 2019857715]

約数ペア:

[(1, 2019857715), (3, 673285905), (5, 403971543), (9, 224428635), (15, 134657181), (27, 74809545), (45, 44885727), (81, 24936515), (135, 14961909), (405, 4987303)]