21777290

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{21143}}^1$

素因数の和:21253

約数の個数: 16

約数和(自身を含む): 39581568

約数和(自身を除く): 17804278

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 21143, 42286, 105715, 211430, 2177729, 4355458, 10888645, 21777290]

約数ペア:

[(1, 21777290), (2, 10888645), (5, 4355458), (10, 2177729), (103, 211430), (206, 105715), (515, 42286), (1030, 21143)]