21338664

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:135

約数の個数: 128

約数和(自身を含む): 60825600

約数和(自身を除く): 39486936

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 29, 31, 43, 46, 58, 62, 69, 86, 87, 92, 93, 116, 124, 129, 138, 172, 174, 184, 186, 232, 248, 258, 276, 344, 348, 372, 516, 552, 667, 696, 713, 744, 899, 989, 1032, 1247, 1333, 1334, 1426, 1798, 1978, 2001, 2139, 2494, 2666, 2668, 2697, 2852, 2967, 3596, 3741, 3956, 3999, 4002, 4278, 4988, 5332, 5336, 5394, 5704, 5934, 7192, 7482, 7912, 7998, 8004, 8556, 9976, 10664, 10788, 11868, 14964, 15996, 16008, 17112, 20677, 21576, 23736, 28681, 29928, 30659, 31992, 38657, 41354, 57362, 61318, 62031, 77314, 82708, 86043, 91977, 114724, 115971, 122636, 124062, 154628, 165416, 172086, 183954, 229448, 231942, 245272, 248124, 309256, 344172, 367908, 463884, 496248, 688344, 735816, 889111, 927768, 1778222, 2667333, 3556444, 5334666, 7112888, 10669332, 21338664]

約数ペア:

[(1, 21338664), (2, 10669332), (3, 7112888), (4, 5334666), (6, 3556444), (8, 2667333), (12, 1778222), (23, 927768), (24, 889111), (29, 735816), (31, 688344), (43, 496248), (46, 463884), (58, 367908), (62, 344172), (69, 309256), (86, 248124), (87, 245272), (92, 231942), (93, 229448), (116, 183954), (124, 172086), (129, 165416), (138, 154628), (172, 124062), (174, 122636), (184, 115971), (186, 114724), (232, 91977), (248, 86043), (258, 82708), (276, 77314), (344, 62031), (348, 61318), (372, 57362), (516, 41354), (552, 38657), (667, 31992), (696, 30659), (713, 29928), (744, 28681), (899, 23736), (989, 21576), (1032, 20677), (1247, 17112), (1333, 16008), (1334, 15996), (1426, 14964), (1798, 11868), (1978, 10788), (2001, 10664), (2139, 9976), (2494, 8556), (2666, 8004), (2668, 7998), (2697, 7912), (2852, 7482), (2967, 7192), (3596, 5934), (3741, 5704), (3956, 5394), (3999, 5336), (4002, 5332), (4278, 4988)]