21663180

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1$

素因数の和:557

約数の個数: 192

約数和(自身を含む): 84188160

約数和(自身を除く): 62524980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 27, 28, 30, 33, 35, 36, 42, 44, 45, 54, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 108, 110, 126, 132, 135, 140, 154, 165, 180, 189, 198, 210, 220, 231, 252, 270, 297, 308, 315, 330, 378, 385, 396, 420, 462, 495, 521, 540, 594, 630, 660, 693, 756, 770, 924, 945, 990, 1042, 1155, 1188, 1260, 1386, 1485, 1540, 1563, 1890, 1980, 2079, 2084, 2310, 2605, 2772, 2970, 3126, 3465, 3647, 3780, 4158, 4620, 4689, 5210, 5731, 5940, 6252, 6930, 7294, 7815, 8316, 9378, 10395, 10420, 10941, 11462, 13860, 14067, 14588, 15630, 17193, 18235, 18756, 20790, 21882, 22924, 23445, 28134, 28655, 31260, 32823, 34386, 36470, 40117, 41580, 43764, 46890, 51579, 54705, 56268, 57310, 65646, 68772, 70335, 72940, 80234, 85965, 93780, 98469, 103158, 109410, 114620, 120351, 131292, 140670, 154737, 160468, 164115, 171930, 196938, 200585, 206316, 218820, 240702, 257895, 281340, 309474, 328230, 343860, 361053, 393876, 401170, 481404, 492345, 515790, 601755, 618948, 656460, 722106, 773685, 802340, 984690, 1031580, 1083159, 1203510, 1444212, 1547370, 1805265, 1969380, 2166318, 2407020, 3094740, 3610530, 4332636, 5415795, 7221060, 10831590, 21663180]

約数ペア:

[(1, 21663180), (2, 10831590), (3, 7221060), (4, 5415795), (5, 4332636), (6, 3610530), (7, 3094740), (9, 2407020), (10, 2166318), (11, 1969380), (12, 1805265), (14, 1547370), (15, 1444212), (18, 1203510), (20, 1083159), (21, 1031580), (22, 984690), (27, 802340), (28, 773685), (30, 722106), (33, 656460), (35, 618948), (36, 601755), (42, 515790), (44, 492345), (45, 481404), (54, 401170), (55, 393876), (60, 361053), (63, 343860), (66, 328230), (70, 309474), (77, 281340), (84, 257895), (90, 240702), (99, 218820), (105, 206316), (108, 200585), (110, 196938), (126, 171930), (132, 164115), (135, 160468), (140, 154737), (154, 140670), (165, 131292), (180, 120351), (189, 114620), (198, 109410), (210, 103158), (220, 98469), (231, 93780), (252, 85965), (270, 80234), (297, 72940), (308, 70335), (315, 68772), (330, 65646), (378, 57310), (385, 56268), (396, 54705), (420, 51579), (462, 46890), (495, 43764), (521, 41580), (540, 40117), (594, 36470), (630, 34386), (660, 32823), (693, 31260), (756, 28655), (770, 28134), (924, 23445), (945, 22924), (990, 21882), (1042, 20790), (1155, 18756), (1188, 18235), (1260, 17193), (1386, 15630), (1485, 14588), (1540, 14067), (1563, 13860), (1890, 11462), (1980, 10941), (2079, 10420), (2084, 10395), (2310, 9378), (2605, 8316), (2772, 7815), (2970, 7294), (3126, 6930), (3465, 6252), (3647, 5940), (3780, 5731), (4158, 5210), (4620, 4689)]