20804948913

素因数分解:

$3^1\times 7^1\times {\mathrm{1901}}^1\times {\mathrm{521153}}^1$

素因数の和:523064

約数の個数: 16

約数和(自身を含む): 31719517056

約数和(自身を除く): 10914568143

約数列:

[1, 3, 7, 21, 1901, 5703, 13307, 39921, 521153, 1563459, 3648071, 10944213, 990711853, 2972135559, 6934982971, 20804948913]

約数ペア:

[(1, 20804948913), (3, 6934982971), (7, 2972135559), (21, 990711853), (1901, 10944213), (5703, 3648071), (13307, 1563459), (39921, 521153)]