81386460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1193}}^1$

素因数の和:1587

約数の個数: 72

約数和(自身を含む): 247731120

約数和(自身を除く): 166344660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 379, 758, 1137, 1193, 1516, 1895, 2274, 2386, 3411, 3579, 3790, 4548, 4772, 5685, 5965, 6822, 7158, 7580, 10737, 11370, 11930, 13644, 14316, 17055, 17895, 21474, 22740, 23860, 34110, 35790, 42948, 53685, 68220, 71580, 107370, 214740, 452147, 904294, 1356441, 1808588, 2260735, 2712882, 4069323, 4521470, 5425764, 6782205, 8138646, 9042940, 13564410, 16277292, 20346615, 27128820, 40693230, 81386460]

約数ペア:

[(1, 81386460), (2, 40693230), (3, 27128820), (4, 20346615), (5, 16277292), (6, 13564410), (9, 9042940), (10, 8138646), (12, 6782205), (15, 5425764), (18, 4521470), (20, 4069323), (30, 2712882), (36, 2260735), (45, 1808588), (60, 1356441), (90, 904294), (180, 452147), (379, 214740), (758, 107370), (1137, 71580), (1193, 68220), (1516, 53685), (1895, 42948), (2274, 35790), (2386, 34110), (3411, 23860), (3579, 22740), (3790, 21474), (4548, 17895), (4772, 17055), (5685, 14316), (5965, 13644), (6822, 11930), (7158, 11370), (7580, 10737)]