209785891

素因数分解:

$7^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1\times {\mathrm{1021}}^1$

素因数の和:1374

約数の個数: 16

約数和(自身を含む): 242827200

約数和(自身を除く): 33041309

約数列:

[1, 7, 149, 197, 1021, 1043, 1379, 7147, 29353, 152129, 201137, 205471, 1064903, 1407959, 29969413, 209785891]

約数ペア:

[(1, 209785891), (7, 29969413), (149, 1407959), (197, 1064903), (1021, 205471), (1043, 201137), (1379, 152129), (7147, 29353)]