638267280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5351}}^1$

素因数の和:5445

約数の個数: 160

約数和(自身を含む): 2293567488

約数和(自身を除く): 1655300208

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 71, 80, 84, 105, 112, 120, 140, 142, 168, 210, 213, 240, 280, 284, 336, 355, 420, 426, 497, 560, 568, 710, 840, 852, 994, 1065, 1136, 1420, 1491, 1680, 1704, 1988, 2130, 2485, 2840, 2982, 3408, 3976, 4260, 4970, 5351, 5680, 5964, 7455, 7952, 8520, 9940, 10702, 11928, 14910, 16053, 17040, 19880, 21404, 23856, 26755, 29820, 32106, 37457, 39760, 42808, 53510, 59640, 64212, 74914, 80265, 85616, 107020, 112371, 119280, 128424, 149828, 160530, 187285, 214040, 224742, 256848, 299656, 321060, 374570, 379921, 428080, 449484, 561855, 599312, 642120, 749140, 759842, 898968, 1123710, 1139763, 1284240, 1498280, 1519684, 1797936, 1899605, 2247420, 2279526, 2659447, 2996560, 3039368, 3799210, 4494840, 4559052, 5318894, 5698815, 6078736, 7598420, 7978341, 8989680, 9118104, 10637788, 11397630, 13297235, 15196840, 15956682, 18236208, 21275576, 22795260, 26594470, 30393680, 31913364, 39891705, 42551152, 45590520, 53188940, 63826728, 79783410, 91181040, 106377880, 127653456, 159566820, 212755760, 319133640, 638267280]

約数ペア:

[(1, 638267280), (2, 319133640), (3, 212755760), (4, 159566820), (5, 127653456), (6, 106377880), (7, 91181040), (8, 79783410), (10, 63826728), (12, 53188940), (14, 45590520), (15, 42551152), (16, 39891705), (20, 31913364), (21, 30393680), (24, 26594470), (28, 22795260), (30, 21275576), (35, 18236208), (40, 15956682), (42, 15196840), (48, 13297235), (56, 11397630), (60, 10637788), (70, 9118104), (71, 8989680), (80, 7978341), (84, 7598420), (105, 6078736), (112, 5698815), (120, 5318894), (140, 4559052), (142, 4494840), (168, 3799210), (210, 3039368), (213, 2996560), (240, 2659447), (280, 2279526), (284, 2247420), (336, 1899605), (355, 1797936), (420, 1519684), (426, 1498280), (497, 1284240), (560, 1139763), (568, 1123710), (710, 898968), (840, 759842), (852, 749140), (994, 642120), (1065, 599312), (1136, 561855), (1420, 449484), (1491, 428080), (1680, 379921), (1704, 374570), (1988, 321060), (2130, 299656), (2485, 256848), (2840, 224742), (2982, 214040), (3408, 187285), (3976, 160530), (4260, 149828), (4970, 128424), (5351, 119280), (5680, 112371), (5964, 107020), (7455, 85616), (7952, 80265), (8520, 74914), (9940, 64212), (10702, 59640), (11928, 53510), (14910, 42808), (16053, 39760), (17040, 37457), (19880, 32106), (21404, 29820), (23856, 26755)]