21147672

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1$

素因数の和:473

約数の個数: 128

約数和(自身を含む): 68060160

約数和(自身を除く): 46912488

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 23, 24, 26, 28, 39, 42, 46, 52, 56, 69, 78, 84, 91, 92, 104, 138, 156, 161, 168, 182, 184, 273, 276, 299, 312, 322, 364, 421, 483, 546, 552, 598, 644, 728, 842, 897, 966, 1092, 1196, 1263, 1288, 1684, 1794, 1932, 2093, 2184, 2392, 2526, 2947, 3368, 3588, 3864, 4186, 5052, 5473, 5894, 6279, 7176, 8372, 8841, 9683, 10104, 10946, 11788, 12558, 16419, 16744, 17682, 19366, 21892, 23576, 25116, 29049, 32838, 35364, 38311, 38732, 43784, 50232, 58098, 65676, 67781, 70728, 76622, 77464, 114933, 116196, 125879, 131352, 135562, 153244, 203343, 229866, 232392, 251758, 271124, 306488, 377637, 406686, 459732, 503516, 542248, 755274, 813372, 881153, 919464, 1007032, 1510548, 1626744, 1762306, 2643459, 3021096, 3524612, 5286918, 7049224, 10573836, 21147672]

約数ペア:

[(1, 21147672), (2, 10573836), (3, 7049224), (4, 5286918), (6, 3524612), (7, 3021096), (8, 2643459), (12, 1762306), (13, 1626744), (14, 1510548), (21, 1007032), (23, 919464), (24, 881153), (26, 813372), (28, 755274), (39, 542248), (42, 503516), (46, 459732), (52, 406686), (56, 377637), (69, 306488), (78, 271124), (84, 251758), (91, 232392), (92, 229866), (104, 203343), (138, 153244), (156, 135562), (161, 131352), (168, 125879), (182, 116196), (184, 114933), (273, 77464), (276, 76622), (299, 70728), (312, 67781), (322, 65676), (364, 58098), (421, 50232), (483, 43784), (546, 38732), (552, 38311), (598, 35364), (644, 32838), (728, 29049), (842, 25116), (897, 23576), (966, 21892), (1092, 19366), (1196, 17682), (1263, 16744), (1288, 16419), (1684, 12558), (1794, 11788), (1932, 10946), (2093, 10104), (2184, 9683), (2392, 8841), (2526, 8372), (2947, 7176), (3368, 6279), (3588, 5894), (3864, 5473), (4186, 5052)]