257364240

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{499}}^1$

素因数の和:829

約数の個数: 160

約数和(自身を含む): 916608000

約数和(自身を除く): 659243760

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, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 307, 336, 420, 499, 560, 614, 840, 921, 998, 1228, 1497, 1535, 1680, 1842, 1996, 2149, 2456, 2495, 2994, 3070, 3493, 3684, 3992, 4298, 4605, 4912, 4990, 5988, 6140, 6447, 6986, 7368, 7485, 7984, 8596, 9210, 9980, 10479, 10745, 11976, 12280, 12894, 13972, 14736, 14970, 17192, 17465, 18420, 19960, 20958, 21490, 23952, 24560, 25788, 27944, 29940, 32235, 34384, 34930, 36840, 39920, 41916, 42980, 51576, 52395, 55888, 59880, 64470, 69860, 73680, 83832, 85960, 103152, 104790, 119760, 128940, 139720, 153193, 167664, 171920, 209580, 257880, 279440, 306386, 419160, 459579, 515760, 612772, 765965, 838320, 919158, 1072351, 1225544, 1531930, 1838316, 2144702, 2297895, 2451088, 3063860, 3217053, 3676632, 4289404, 4595790, 5361755, 6127720, 6434106, 7353264, 8578808, 9191580, 10723510, 12255440, 12868212, 16085265, 17157616, 18383160, 21447020, 25736424, 32170530, 36766320, 42894040, 51472848, 64341060, 85788080, 128682120, 257364240]

約数ペア:

[(1, 257364240), (2, 128682120), (3, 85788080), (4, 64341060), (5, 51472848), (6, 42894040), (7, 36766320), (8, 32170530), (10, 25736424), (12, 21447020), (14, 18383160), (15, 17157616), (16, 16085265), (20, 12868212), (21, 12255440), (24, 10723510), (28, 9191580), (30, 8578808), (35, 7353264), (40, 6434106), (42, 6127720), (48, 5361755), (56, 4595790), (60, 4289404), (70, 3676632), (80, 3217053), (84, 3063860), (105, 2451088), (112, 2297895), (120, 2144702), (140, 1838316), (168, 1531930), (210, 1225544), (240, 1072351), (280, 919158), (307, 838320), (336, 765965), (420, 612772), (499, 515760), (560, 459579), (614, 419160), (840, 306386), (921, 279440), (998, 257880), (1228, 209580), (1497, 171920), (1535, 167664), (1680, 153193), (1842, 139720), (1996, 128940), (2149, 119760), (2456, 104790), (2495, 103152), (2994, 85960), (3070, 83832), (3493, 73680), (3684, 69860), (3992, 64470), (4298, 59880), (4605, 55888), (4912, 52395), (4990, 51576), (5988, 42980), (6140, 41916), (6447, 39920), (6986, 36840), (7368, 34930), (7485, 34384), (7984, 32235), (8596, 29940), (9210, 27944), (9980, 25788), (10479, 24560), (10745, 23952), (11976, 21490), (12280, 20958), (12894, 19960), (13972, 18420), (14736, 17465), (14970, 17192)]