20199509561

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1\times {\mathrm{1621}}^1$

素因数の和:2086

約数の個数: 48

約数和(自身を含む): 26138594880

約数和(自身を除く): 5939085319

約数列:

[1, 7, 11, 49, 61, 77, 379, 427, 539, 671, 1621, 2653, 2989, 4169, 4697, 11347, 17831, 18571, 23119, 29183, 32879, 79429, 98881, 124817, 161833, 204281, 254309, 614359, 692167, 873719, 1087691, 1132831, 1780163, 4300513, 4845169, 6757949, 7613837, 12461141, 30103591, 37475899, 47305643, 53296859, 262331293, 331139501, 412234889, 1836319051, 2885644223, 20199509561]

約数ペア:

[(1, 20199509561), (7, 2885644223), (11, 1836319051), (49, 412234889), (61, 331139501), (77, 262331293), (379, 53296859), (427, 47305643), (539, 37475899), (671, 30103591), (1621, 12461141), (2653, 7613837), (2989, 6757949), (4169, 4845169), (4697, 4300513), (11347, 1780163), (17831, 1132831), (18571, 1087691), (23119, 873719), (29183, 692167), (32879, 614359), (79429, 254309), (98881, 204281), (124817, 161833)]