257792920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{1087}}^1$

素因数の和:1134

約数の個数: 144

約数和(自身を含む): 742331520

約数和(自身を除く): 484538600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 121, 140, 154, 196, 220, 242, 245, 280, 308, 385, 392, 440, 484, 490, 539, 605, 616, 770, 847, 968, 980, 1078, 1087, 1210, 1540, 1694, 1960, 2156, 2174, 2420, 2695, 3080, 3388, 4235, 4312, 4348, 4840, 5390, 5435, 5929, 6776, 7609, 8470, 8696, 10780, 10870, 11858, 11957, 15218, 16940, 21560, 21740, 23716, 23914, 29645, 30436, 33880, 38045, 43480, 47432, 47828, 53263, 59290, 59785, 60872, 76090, 83699, 95656, 106526, 118580, 119570, 131527, 152180, 167398, 213052, 237160, 239140, 263054, 266315, 304360, 334796, 418495, 426104, 478280, 526108, 532630, 585893, 657635, 669592, 836990, 920689, 1052216, 1065260, 1171786, 1315270, 1673980, 1841378, 2130520, 2343572, 2630540, 2929465, 3347960, 3682756, 4603445, 4687144, 5261080, 5858930, 6444823, 7365512, 9206890, 11717860, 12889646, 18413780, 23435720, 25779292, 32224115, 36827560, 51558584, 64448230, 128896460, 257792920]

約数ペア:

[(1, 257792920), (2, 128896460), (4, 64448230), (5, 51558584), (7, 36827560), (8, 32224115), (10, 25779292), (11, 23435720), (14, 18413780), (20, 12889646), (22, 11717860), (28, 9206890), (35, 7365512), (40, 6444823), (44, 5858930), (49, 5261080), (55, 4687144), (56, 4603445), (70, 3682756), (77, 3347960), (88, 2929465), (98, 2630540), (110, 2343572), (121, 2130520), (140, 1841378), (154, 1673980), (196, 1315270), (220, 1171786), (242, 1065260), (245, 1052216), (280, 920689), (308, 836990), (385, 669592), (392, 657635), (440, 585893), (484, 532630), (490, 526108), (539, 478280), (605, 426104), (616, 418495), (770, 334796), (847, 304360), (968, 266315), (980, 263054), (1078, 239140), (1087, 237160), (1210, 213052), (1540, 167398), (1694, 152180), (1960, 131527), (2156, 119570), (2174, 118580), (2420, 106526), (2695, 95656), (3080, 83699), (3388, 76090), (4235, 60872), (4312, 59785), (4348, 59290), (4840, 53263), (5390, 47828), (5435, 47432), (5929, 43480), (6776, 38045), (7609, 33880), (8470, 30436), (8696, 29645), (10780, 23914), (10870, 23716), (11858, 21740), (11957, 21560), (15218, 16940)]