21565701.000000000

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{229}}^1$

素因数の和:430

約数の個数: 144

約数和(自身を含む): 349614720

約数和(自身を除く): 239796396

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 173, 198, 229, 231, 252, 308, 346, 396, 458, 462, 519, 687, 692, 693, 916, 924, 1038, 1211, 1374, 1386, 1557, 1603, 1903, 2061, 2076, 2422, 2519, 2748, 2772, 3114, 3206, 3633, 3806, 4122, 4809, 4844, 5038, 5709, 6228, 6412, 7266, 7557, 7612, 8244, 9618, 10076, 10899, 11418, 13321, 14427, 14532, 15114, 17127, 17633, 19236, 21798, 22671, 22836, 26642, 28854, 30228, 34254, 35266, 39617, 39963, 43596, 45342, 52899, 53284, 57708, 68508, 70532, 79234, 79926, 90684, 105798, 118851, 119889, 158468, 158697, 159852, 211596, 237702, 239778, 277319, 317394, 356553, 435787, 475404, 479556, 554638, 634788, 713106, 831957, 871574, 1109276, 1307361, 1426212, 1663914, 1743148, 2495871, 2614722, 3050509, 3327828, 3922083, 4991742, 5229444, 6101018, 7844166, 9151527, 9983484, 12202036, 15688332, 18303054, 27454581, 36606108, 54909162, 109818324]

約数ペア:

[(1, 109818324), (2, 54909162), (3, 36606108), (4, 27454581), (6, 18303054), (7, 15688332), (9, 12202036), (11, 9983484), (12, 9151527), (14, 7844166), (18, 6101018), (21, 5229444), (22, 4991742), (28, 3922083), (33, 3327828), (36, 3050509), (42, 2614722), (44, 2495871), (63, 1743148), (66, 1663914), (77, 1426212), (84, 1307361), (99, 1109276), (126, 871574), (132, 831957), (154, 713106), (173, 634788), (198, 554638), (229, 479556), (231, 475404), (252, 435787), (308, 356553), (346, 317394), (396, 277319), (458, 239778), (462, 237702), (519, 211596), (687, 159852), (692, 158697), (693, 158468), (916, 119889), (924, 118851), (1038, 105798), (1211, 90684), (1374, 79926), (1386, 79234), (1557, 70532), (1603, 68508), (1903, 57708), (2061, 53284), (2076, 52899), (2422, 45342), (2519, 43596), (2748, 39963), (2772, 39617), (3114, 35266), (3206, 34254), (3633, 30228), (3806, 28854), (4122, 26642), (4809, 22836), (4844, 22671), (5038, 21798), (5709, 19236), (6228, 17633), (6412, 17127), (7266, 15114), (7557, 14532), (7612, 14427), (8244, 13321), (9618, 11418), (10076, 10899)]