21421140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{947}}^1$

素因数の和:1001

約数の個数: 96

約数和(自身を含む): 66890880

約数和(自身を除く): 45469740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 29, 30, 39, 52, 58, 60, 65, 78, 87, 116, 130, 145, 156, 174, 195, 260, 290, 348, 377, 390, 435, 580, 754, 780, 870, 947, 1131, 1508, 1740, 1885, 1894, 2262, 2841, 3770, 3788, 4524, 4735, 5655, 5682, 7540, 9470, 11310, 11364, 12311, 14205, 18940, 22620, 24622, 27463, 28410, 36933, 49244, 54926, 56820, 61555, 73866, 82389, 109852, 123110, 137315, 147732, 164778, 184665, 246220, 274630, 329556, 357019, 369330, 411945, 549260, 714038, 738660, 823890, 1071057, 1428076, 1647780, 1785095, 2142114, 3570190, 4284228, 5355285, 7140380, 10710570, 21421140]

約数ペア:

[(1, 21421140), (2, 10710570), (3, 7140380), (4, 5355285), (5, 4284228), (6, 3570190), (10, 2142114), (12, 1785095), (13, 1647780), (15, 1428076), (20, 1071057), (26, 823890), (29, 738660), (30, 714038), (39, 549260), (52, 411945), (58, 369330), (60, 357019), (65, 329556), (78, 274630), (87, 246220), (116, 184665), (130, 164778), (145, 147732), (156, 137315), (174, 123110), (195, 109852), (260, 82389), (290, 73866), (348, 61555), (377, 56820), (390, 54926), (435, 49244), (580, 36933), (754, 28410), (780, 27463), (870, 24622), (947, 22620), (1131, 18940), (1508, 14205), (1740, 12311), (1885, 11364), (1894, 11310), (2262, 9470), (2841, 7540), (3770, 5682), (3788, 5655), (4524, 4735)]