215511164

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{445271}}^1$

素因数の和:445297

約数の個数: 18

約数和(自身を含む): 414548232

約数和(自身を除く): 199037068

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 445271, 890542, 1781084, 4897981, 9795962, 19591924, 53877791, 107755582, 215511164]

約数ペア:

[(1, 215511164), (2, 107755582), (4, 53877791), (11, 19591924), (22, 9795962), (44, 4897981), (121, 1781084), (242, 890542), (484, 445271)]