20125076180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{905719}}^1$

素因数の和:905840

約数の個数: 48

約数和(自身を含む): 46561253760

約数和(自身を除く): 26436177580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 1010, 1111, 2020, 2222, 4444, 5555, 11110, 22220, 905719, 1811438, 3622876, 4528595, 9057190, 9962909, 18114380, 19925818, 39851636, 49814545, 91477619, 99629090, 182955238, 199258180, 365910476, 457388095, 914776190, 1006253809, 1829552380, 2012507618, 4025015236, 5031269045, 10062538090, 20125076180]

約数ペア:

[(1, 20125076180), (2, 10062538090), (4, 5031269045), (5, 4025015236), (10, 2012507618), (11, 1829552380), (20, 1006253809), (22, 914776190), (44, 457388095), (55, 365910476), (101, 199258180), (110, 182955238), (202, 99629090), (220, 91477619), (404, 49814545), (505, 39851636), (1010, 19925818), (1111, 18114380), (2020, 9962909), (2222, 9057190), (4444, 4528595), (5555, 3622876), (11110, 1811438), (22220, 905719)]