81506820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{337}}^1$

素因数の和:517

約数の個数: 96

約数和(自身を含む): 238492800

約数和(自身を除く): 156985980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 139, 145, 174, 278, 290, 337, 348, 417, 435, 556, 580, 674, 695, 834, 870, 1011, 1348, 1390, 1668, 1685, 1740, 2022, 2085, 2780, 3370, 4031, 4044, 4170, 5055, 6740, 8062, 8340, 9773, 10110, 12093, 16124, 19546, 20155, 20220, 24186, 29319, 39092, 40310, 46843, 48372, 48865, 58638, 60465, 80620, 93686, 97730, 117276, 120930, 140529, 146595, 187372, 195460, 234215, 241860, 281058, 293190, 468430, 562116, 586380, 702645, 936860, 1358447, 1405290, 2716894, 2810580, 4075341, 5433788, 6792235, 8150682, 13584470, 16301364, 20376705, 27168940, 40753410, 81506820]

約数ペア:

[(1, 81506820), (2, 40753410), (3, 27168940), (4, 20376705), (5, 16301364), (6, 13584470), (10, 8150682), (12, 6792235), (15, 5433788), (20, 4075341), (29, 2810580), (30, 2716894), (58, 1405290), (60, 1358447), (87, 936860), (116, 702645), (139, 586380), (145, 562116), (174, 468430), (278, 293190), (290, 281058), (337, 241860), (348, 234215), (417, 195460), (435, 187372), (556, 146595), (580, 140529), (674, 120930), (695, 117276), (834, 97730), (870, 93686), (1011, 80620), (1348, 60465), (1390, 58638), (1668, 48865), (1685, 48372), (1740, 46843), (2022, 40310), (2085, 39092), (2780, 29319), (3370, 24186), (4031, 20220), (4044, 20155), (4170, 19546), (5055, 16124), (6740, 12093), (8062, 10110), (8340, 9773)]