20987150855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{1223}}^1\times {\mathrm{312007}}^1$

素因数の和:313246

約数の個数: 16

約数和(自身を含む): 27496641024

約数和(自身を除く): 6509490169

約数列:

[1, 5, 11, 55, 1223, 6115, 13453, 67265, 312007, 1560035, 3432077, 17160385, 381584561, 1907922805, 4197430171, 20987150855]

約数ペア:

[(1, 20987150855), (5, 4197430171), (11, 1907922805), (55, 381584561), (1223, 17160385), (6115, 3432077), (13453, 1560035), (67265, 312007)]