219978868

素因数分解:

$2^2\times {\mathrm{131}}^1\times {\mathrm{197}}^1\times {\mathrm{2131}}^1$

素因数の和:2463

約数の個数: 24

約数和(自身を含む): 390053664

約数和(自身を除く): 170074796

約数列:

[1, 2, 4, 131, 197, 262, 394, 524, 788, 2131, 4262, 8524, 25807, 51614, 103228, 279161, 419807, 558322, 839614, 1116644, 1679228, 54994717, 109989434, 219978868]

約数ペア:

[(1, 219978868), (2, 109989434), (4, 54994717), (131, 1679228), (197, 1116644), (262, 839614), (394, 558322), (524, 419807), (788, 279161), (2131, 103228), (4262, 51614), (8524, 25807)]