21931757

素因数分解:

${\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:356

約数の個数: 16

約数和(自身を含む): 23808000

約数和(自身を除く): 1876243

約数列:

[1, 19, 61, 127, 149, 1159, 2413, 2831, 7747, 9089, 18923, 147193, 172691, 359537, 1154303, 21931757]

約数ペア:

[(1, 21931757), (19, 1154303), (61, 359537), (127, 172691), (149, 147193), (1159, 18923), (2413, 9089), (2831, 7747)]