2021188545

素因数分解:

$3^4\times 5^1\times {\mathrm{4990589}}^1$

素因数の和:4990606

約数の個数: 20

約数和(自身を含む): 3623168340

約数和(自身を除く): 1601979795

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4990589, 14971767, 24952945, 44915301, 74858835, 134745903, 224576505, 404237709, 673729515, 2021188545]

約数ペア:

[(1, 2021188545), (3, 673729515), (5, 404237709), (9, 224576505), (15, 134745903), (27, 74858835), (45, 44915301), (81, 24952945), (135, 14971767), (405, 4990589)]