21990147228

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1\times {\mathrm{7841}}^1$

素因数の和:8248

約数の個数: 144

約数和(自身を含む): 65767403520

約数和(自身を除く): 43777256292

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 31, 36, 42, 62, 63, 84, 93, 124, 126, 186, 217, 252, 279, 359, 372, 434, 558, 651, 718, 868, 1077, 1116, 1302, 1436, 1953, 2154, 2513, 2604, 3231, 3906, 4308, 5026, 6462, 7539, 7812, 7841, 10052, 11129, 12924, 15078, 15682, 22258, 22617, 23523, 30156, 31364, 33387, 44516, 45234, 47046, 54887, 66774, 70569, 77903, 90468, 94092, 100161, 109774, 133548, 141138, 155806, 164661, 200322, 219548, 233709, 243071, 282276, 311612, 329322, 400644, 467418, 486142, 493983, 658644, 701127, 729213, 934836, 972284, 987966, 1402254, 1458426, 1701497, 1975932, 2187639, 2804508, 2814919, 2916852, 3402994, 4375278, 5104491, 5629838, 6805988, 8444757, 8750556, 10208982, 11259676, 15313473, 16889514, 19704433, 20417964, 25334271, 30626946, 33779028, 39408866, 50668542, 59113299, 61253892, 78817732, 87262489, 101337084, 118226598, 174524978, 177339897, 236453196, 261787467, 349049956, 354679794, 523574934, 610837423, 709359588, 785362401, 1047149868, 1221674846, 1570724802, 1832512269, 2443349692, 3141449604, 3665024538, 5497536807, 7330049076, 10995073614, 21990147228]

約数ペア:

[(1, 21990147228), (2, 10995073614), (3, 7330049076), (4, 5497536807), (6, 3665024538), (7, 3141449604), (9, 2443349692), (12, 1832512269), (14, 1570724802), (18, 1221674846), (21, 1047149868), (28, 785362401), (31, 709359588), (36, 610837423), (42, 523574934), (62, 354679794), (63, 349049956), (84, 261787467), (93, 236453196), (124, 177339897), (126, 174524978), (186, 118226598), (217, 101337084), (252, 87262489), (279, 78817732), (359, 61253892), (372, 59113299), (434, 50668542), (558, 39408866), (651, 33779028), (718, 30626946), (868, 25334271), (1077, 20417964), (1116, 19704433), (1302, 16889514), (1436, 15313473), (1953, 11259676), (2154, 10208982), (2513, 8750556), (2604, 8444757), (3231, 6805988), (3906, 5629838), (4308, 5104491), (5026, 4375278), (6462, 3402994), (7539, 2916852), (7812, 2814919), (7841, 2804508), (10052, 2187639), (11129, 1975932), (12924, 1701497), (15078, 1458426), (15682, 1402254), (22258, 987966), (22617, 972284), (23523, 934836), (30156, 729213), (31364, 701127), (33387, 658644), (44516, 493983), (45234, 486142), (47046, 467418), (54887, 400644), (66774, 329322), (70569, 311612), (77903, 282276), (90468, 243071), (94092, 233709), (100161, 219548), (109774, 200322), (133548, 164661), (141138, 155806)]