20864695880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{2221}}^1\times {\mathrm{4793}}^1$

素因数の和:7039

約数の個数: 96

約数和(自身を含む): 54646134840

約数和(自身を除く): 33781438960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 2221, 4442, 4793, 8884, 9586, 11105, 15547, 17768, 19172, 22210, 23965, 31094, 33551, 38344, 44420, 47930, 62188, 67102, 77735, 88840, 95860, 108829, 124376, 134204, 155470, 167755, 191720, 217658, 234857, 268408, 310940, 335510, 435316, 469714, 544145, 621880, 671020, 870632, 939428, 1088290, 1174285, 1342040, 1878856, 2176580, 2348570, 4353160, 4697140, 9394280, 10645253, 21290506, 42581012, 53226265, 74516771, 85162024, 106452530, 149033542, 212905060, 298067084, 372583855, 425810120, 521617397, 596134168, 745167710, 1043234794, 1490335420, 2086469588, 2608086985, 2980670840, 4172939176, 5216173970, 10432347940, 20864695880]

約数ペア:

[(1, 20864695880), (2, 10432347940), (4, 5216173970), (5, 4172939176), (7, 2980670840), (8, 2608086985), (10, 2086469588), (14, 1490335420), (20, 1043234794), (28, 745167710), (35, 596134168), (40, 521617397), (49, 425810120), (56, 372583855), (70, 298067084), (98, 212905060), (140, 149033542), (196, 106452530), (245, 85162024), (280, 74516771), (392, 53226265), (490, 42581012), (980, 21290506), (1960, 10645253), (2221, 9394280), (4442, 4697140), (4793, 4353160), (8884, 2348570), (9586, 2176580), (11105, 1878856), (15547, 1342040), (17768, 1174285), (19172, 1088290), (22210, 939428), (23965, 870632), (31094, 671020), (33551, 621880), (38344, 544145), (44420, 469714), (47930, 435316), (62188, 335510), (67102, 310940), (77735, 268408), (88840, 234857), (95860, 217658), (108829, 191720), (124376, 167755), (134204, 155470)]