21498960

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:281

約数の個数: 160

約数和(自身を含む): 77709312

約数和(自身を除く): 56210352

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, 67, 70, 80, 84, 105, 112, 120, 134, 140, 168, 191, 201, 210, 240, 268, 280, 335, 336, 382, 402, 420, 469, 536, 560, 573, 670, 764, 804, 840, 938, 955, 1005, 1072, 1146, 1337, 1340, 1407, 1528, 1608, 1680, 1876, 1910, 2010, 2292, 2345, 2674, 2680, 2814, 2865, 3056, 3216, 3752, 3820, 4011, 4020, 4584, 4690, 5348, 5360, 5628, 5730, 6685, 7035, 7504, 7640, 8022, 8040, 9168, 9380, 10696, 11256, 11460, 12797, 13370, 14070, 15280, 16044, 16080, 18760, 20055, 21392, 22512, 22920, 25594, 26740, 28140, 32088, 37520, 38391, 40110, 45840, 51188, 53480, 56280, 63985, 64176, 76782, 80220, 89579, 102376, 106960, 112560, 127970, 153564, 160440, 179158, 191955, 204752, 255940, 268737, 307128, 320880, 358316, 383910, 447895, 511880, 537474, 614256, 716632, 767820, 895790, 1023760, 1074948, 1343685, 1433264, 1535640, 1791580, 2149896, 2687370, 3071280, 3583160, 4299792, 5374740, 7166320, 10749480, 21498960]

約数ペア:

[(1, 21498960), (2, 10749480), (3, 7166320), (4, 5374740), (5, 4299792), (6, 3583160), (7, 3071280), (8, 2687370), (10, 2149896), (12, 1791580), (14, 1535640), (15, 1433264), (16, 1343685), (20, 1074948), (21, 1023760), (24, 895790), (28, 767820), (30, 716632), (35, 614256), (40, 537474), (42, 511880), (48, 447895), (56, 383910), (60, 358316), (67, 320880), (70, 307128), (80, 268737), (84, 255940), (105, 204752), (112, 191955), (120, 179158), (134, 160440), (140, 153564), (168, 127970), (191, 112560), (201, 106960), (210, 102376), (240, 89579), (268, 80220), (280, 76782), (335, 64176), (336, 63985), (382, 56280), (402, 53480), (420, 51188), (469, 45840), (536, 40110), (560, 38391), (573, 37520), (670, 32088), (764, 28140), (804, 26740), (840, 25594), (938, 22920), (955, 22512), (1005, 21392), (1072, 20055), (1146, 18760), (1337, 16080), (1340, 16044), (1407, 15280), (1528, 14070), (1608, 13370), (1680, 12797), (1876, 11460), (1910, 11256), (2010, 10696), (2292, 9380), (2345, 9168), (2674, 8040), (2680, 8022), (2814, 7640), (2865, 7504), (3056, 7035), (3216, 6685), (3752, 5730), (3820, 5628), (4011, 5360), (4020, 5348), (4584, 4690)]