217654316

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{449699}}^1$

素因数の和:449725

約数の個数: 18

約数和(自身を含む): 418670700

約数和(自身を除く): 201016384

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 449699, 899398, 1798796, 4946689, 9893378, 19786756, 54413579, 108827158, 217654316]

約数ペア:

[(1, 217654316), (2, 108827158), (4, 54413579), (11, 19786756), (22, 9893378), (44, 4946689), (121, 1798796), (242, 899398), (484, 449699)]