20408065865

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{2490307}}^1$

素因数の和:2490472

約数の個数: 16

約数和(自身を含む): 26895326400

約数和(自身を除く): 6487260535

約数列:

[1, 5, 11, 55, 149, 745, 1639, 8195, 2490307, 12451535, 27393377, 136966885, 371055743, 1855278715, 4081613173, 20408065865]

約数ペア:

[(1, 20408065865), (5, 4081613173), (11, 1855278715), (55, 371055743), (149, 136966885), (745, 27393377), (1639, 12451535), (8195, 2490307)]