221571692

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{153443}}^1$

素因数の和:153485

約数の個数: 18

約数和(自身を含む): 409235148

約数和(自身を除く): 187663456

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 153443, 306886, 613772, 2915417, 5830834, 11661668, 55392923, 110785846, 221571692]

約数ペア:

[(1, 221571692), (2, 110785846), (4, 55392923), (19, 11661668), (38, 5830834), (76, 2915417), (361, 613772), (722, 306886), (1444, 153443)]