278942120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{1319}}^1$

素因数の和:1658

約数の個数: 64

約数和(自身を含む): 667180800

約数和(自身を除く): 388238680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 311, 340, 622, 680, 1244, 1319, 1555, 2488, 2638, 3110, 5276, 5287, 6220, 6595, 10552, 10574, 12440, 13190, 21148, 22423, 26380, 26435, 42296, 44846, 52760, 52870, 89692, 105740, 112115, 179384, 211480, 224230, 410209, 448460, 820418, 896920, 1640836, 2051045, 3281672, 4102090, 6973553, 8204180, 13947106, 16408360, 27894212, 34867765, 55788424, 69735530, 139471060, 278942120]

約数ペア:

[(1, 278942120), (2, 139471060), (4, 69735530), (5, 55788424), (8, 34867765), (10, 27894212), (17, 16408360), (20, 13947106), (34, 8204180), (40, 6973553), (68, 4102090), (85, 3281672), (136, 2051045), (170, 1640836), (311, 896920), (340, 820418), (622, 448460), (680, 410209), (1244, 224230), (1319, 211480), (1555, 179384), (2488, 112115), (2638, 105740), (3110, 89692), (5276, 52870), (5287, 52760), (6220, 44846), (6595, 42296), (10552, 26435), (10574, 26380), (12440, 22423), (13190, 21148)]