18686913

素因数分解:

$3^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{2027}}^1$

素因数の和:2476

約数の個数: 16

約数和(自身を含む): 28554240

約数和(自身を除く): 9867327

約数列:

[1, 3, 7, 21, 439, 1317, 2027, 3073, 6081, 9219, 14189, 42567, 889853, 2669559, 6228971, 18686913]

約数ペア:

[(1, 18686913), (3, 6228971), (7, 2669559), (21, 889853), (439, 42567), (1317, 14189), (2027, 9219), (3073, 6081)]