81937240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{719}}^1$

素因数の和:785

約数の個数: 128

約数和(自身を含む): 236390400

約数和(自身を除く): 154453160

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 37, 40, 44, 55, 56, 70, 74, 77, 88, 110, 140, 148, 154, 185, 220, 259, 280, 296, 308, 370, 385, 407, 440, 518, 616, 719, 740, 770, 814, 1036, 1295, 1438, 1480, 1540, 1628, 2035, 2072, 2590, 2849, 2876, 3080, 3256, 3595, 4070, 5033, 5180, 5698, 5752, 7190, 7909, 8140, 10066, 10360, 11396, 14245, 14380, 15818, 16280, 20132, 22792, 25165, 26603, 28490, 28760, 31636, 39545, 40264, 50330, 53206, 55363, 56980, 63272, 79090, 100660, 106412, 110726, 113960, 133015, 158180, 186221, 201320, 212824, 221452, 266030, 276815, 292633, 316360, 372442, 442904, 532060, 553630, 585266, 744884, 931105, 1064120, 1107260, 1170532, 1463165, 1489768, 1862210, 2048431, 2214520, 2341064, 2926330, 3724420, 4096862, 5852660, 7448840, 8193724, 10242155, 11705320, 16387448, 20484310, 40968620, 81937240]

約数ペア:

[(1, 81937240), (2, 40968620), (4, 20484310), (5, 16387448), (7, 11705320), (8, 10242155), (10, 8193724), (11, 7448840), (14, 5852660), (20, 4096862), (22, 3724420), (28, 2926330), (35, 2341064), (37, 2214520), (40, 2048431), (44, 1862210), (55, 1489768), (56, 1463165), (70, 1170532), (74, 1107260), (77, 1064120), (88, 931105), (110, 744884), (140, 585266), (148, 553630), (154, 532060), (185, 442904), (220, 372442), (259, 316360), (280, 292633), (296, 276815), (308, 266030), (370, 221452), (385, 212824), (407, 201320), (440, 186221), (518, 158180), (616, 133015), (719, 113960), (740, 110726), (770, 106412), (814, 100660), (1036, 79090), (1295, 63272), (1438, 56980), (1480, 55363), (1540, 53206), (1628, 50330), (2035, 40264), (2072, 39545), (2590, 31636), (2849, 28760), (2876, 28490), (3080, 26603), (3256, 25165), (3595, 22792), (4070, 20132), (5033, 16280), (5180, 15818), (5698, 14380), (5752, 14245), (7190, 11396), (7909, 10360), (8140, 10066)]