221426209

素因数分解:

${\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:325

約数の個数: 24

約数和(自身を含む): 242937792

約数和(自身を除く): 21511583

約数列:

[1, 19, 53, 71, 163, 361, 1007, 1349, 3097, 3763, 8639, 11573, 19133, 25631, 58843, 71497, 164141, 219887, 613369, 1358443, 3118679, 4177853, 11654011, 221426209]

約数ペア:

[(1, 221426209), (19, 11654011), (53, 4177853), (71, 3118679), (163, 1358443), (361, 613369), (1007, 219887), (1349, 164141), (3097, 71497), (3763, 58843), (8639, 25631), (11573, 19133)]