18904809

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{81839}}^1$

素因数の和:81860

約数の個数: 16

約数和(自身を含む): 31426560

約数和(自身を除く): 12521751

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 81839, 245517, 572873, 900229, 1718619, 2700687, 6301603, 18904809]

約数ペア:

[(1, 18904809), (3, 6301603), (7, 2700687), (11, 1718619), (21, 900229), (33, 572873), (77, 245517), (231, 81839)]