20804927668

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12180871}}^1$

素因数の和:12180943

約数の個数: 24

約数和(自身を含む): 42291987584

約数和(自身を除く): 21487059916

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12180871, 24361742, 48723484, 85266097, 170532194, 341064388, 743033131, 1486066262, 2972132524, 5201231917, 10402463834, 20804927668]

約数ペア:

[(1, 20804927668), (2, 10402463834), (4, 5201231917), (7, 2972132524), (14, 1486066262), (28, 743033131), (61, 341064388), (122, 170532194), (244, 85266097), (427, 48723484), (854, 24361742), (1708, 12180871)]