128268840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{491}}^1$

素因数の和:823

約数の個数: 128

約数和(自身を含む): 442091520

約数和(自身を除く): 313822680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 311, 420, 491, 622, 840, 933, 982, 1244, 1473, 1555, 1866, 1964, 2177, 2455, 2488, 2946, 3110, 3437, 3732, 3928, 4354, 4665, 4910, 5892, 6220, 6531, 6874, 7365, 7464, 8708, 9330, 9820, 10311, 10885, 11784, 12440, 13062, 13748, 14730, 17185, 17416, 18660, 19640, 20622, 21770, 26124, 27496, 29460, 32655, 34370, 37320, 41244, 43540, 51555, 52248, 58920, 65310, 68740, 82488, 87080, 103110, 130620, 137480, 152701, 206220, 261240, 305402, 412440, 458103, 610804, 763505, 916206, 1068907, 1221608, 1527010, 1832412, 2137814, 2290515, 3054020, 3206721, 3664824, 4275628, 4581030, 5344535, 6108040, 6413442, 8551256, 9162060, 10689070, 12826884, 16033605, 18324120, 21378140, 25653768, 32067210, 42756280, 64134420, 128268840]

約数ペア:

[(1, 128268840), (2, 64134420), (3, 42756280), (4, 32067210), (5, 25653768), (6, 21378140), (7, 18324120), (8, 16033605), (10, 12826884), (12, 10689070), (14, 9162060), (15, 8551256), (20, 6413442), (21, 6108040), (24, 5344535), (28, 4581030), (30, 4275628), (35, 3664824), (40, 3206721), (42, 3054020), (56, 2290515), (60, 2137814), (70, 1832412), (84, 1527010), (105, 1221608), (120, 1068907), (140, 916206), (168, 763505), (210, 610804), (280, 458103), (311, 412440), (420, 305402), (491, 261240), (622, 206220), (840, 152701), (933, 137480), (982, 130620), (1244, 103110), (1473, 87080), (1555, 82488), (1866, 68740), (1964, 65310), (2177, 58920), (2455, 52248), (2488, 51555), (2946, 43540), (3110, 41244), (3437, 37320), (3732, 34370), (3928, 32655), (4354, 29460), (4665, 27496), (4910, 26124), (5892, 21770), (6220, 20622), (6531, 19640), (6874, 18660), (7365, 17416), (7464, 17185), (8708, 14730), (9330, 13748), (9820, 13062), (10311, 12440), (10885, 11784)]