20123965180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{317}}^1\times {\mathrm{2857}}^1$

素因数の和:3295

約数の個数: 96

約数和(自身を含む): 46721852352

約数和(自身を除く): 26597887172

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 317, 404, 505, 634, 1010, 1111, 1268, 1585, 2020, 2222, 2857, 3170, 3487, 4444, 5555, 5714, 6340, 6974, 11110, 11428, 13948, 14285, 17435, 22220, 28570, 31427, 32017, 34870, 57140, 62854, 64034, 69740, 125708, 128068, 157135, 160085, 288557, 314270, 320170, 352187, 577114, 628540, 640340, 704374, 905669, 1154228, 1408748, 1442785, 1760935, 1811338, 2885570, 3174127, 3521870, 3622676, 4528345, 5771140, 6348254, 7043740, 9056690, 9962359, 12696508, 15870635, 18113380, 19924718, 31741270, 39849436, 49811795, 63482540, 91472569, 99623590, 182945138, 199247180, 365890276, 457362845, 914725690, 1006198259, 1829451380, 2012396518, 4024793036, 5030991295, 10061982590, 20123965180]

約数ペア:

[(1, 20123965180), (2, 10061982590), (4, 5030991295), (5, 4024793036), (10, 2012396518), (11, 1829451380), (20, 1006198259), (22, 914725690), (44, 457362845), (55, 365890276), (101, 199247180), (110, 182945138), (202, 99623590), (220, 91472569), (317, 63482540), (404, 49811795), (505, 39849436), (634, 31741270), (1010, 19924718), (1111, 18113380), (1268, 15870635), (1585, 12696508), (2020, 9962359), (2222, 9056690), (2857, 7043740), (3170, 6348254), (3487, 5771140), (4444, 4528345), (5555, 3622676), (5714, 3521870), (6340, 3174127), (6974, 2885570), (11110, 1811338), (11428, 1760935), (13948, 1442785), (14285, 1408748), (17435, 1154228), (22220, 905669), (28570, 704374), (31427, 640340), (32017, 628540), (34870, 577114), (57140, 352187), (62854, 320170), (64034, 314270), (69740, 288557), (125708, 160085), (128068, 157135)]