20881608

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:243

約数の個数: 128

約数和(自身を含む): 62899200

約数和(自身を除く): 42017592

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 19, 22, 23, 24, 33, 38, 44, 46, 57, 66, 69, 76, 88, 92, 114, 132, 138, 152, 181, 184, 209, 228, 253, 264, 276, 362, 418, 437, 456, 506, 543, 552, 627, 724, 759, 836, 874, 1012, 1086, 1254, 1311, 1448, 1518, 1672, 1748, 1991, 2024, 2172, 2508, 2622, 3036, 3439, 3496, 3982, 4163, 4344, 4807, 5016, 5244, 5973, 6072, 6878, 7964, 8326, 9614, 10317, 10488, 11946, 12489, 13756, 14421, 15928, 16652, 19228, 20634, 23892, 24978, 27512, 28842, 33304, 37829, 38456, 41268, 45793, 47784, 49956, 57684, 75658, 79097, 82536, 91586, 99912, 113487, 115368, 137379, 151316, 158194, 183172, 226974, 237291, 274758, 302632, 316388, 366344, 453948, 474582, 549516, 632776, 870067, 907896, 949164, 1099032, 1740134, 1898328, 2610201, 3480268, 5220402, 6960536, 10440804, 20881608]

約数ペア:

[(1, 20881608), (2, 10440804), (3, 6960536), (4, 5220402), (6, 3480268), (8, 2610201), (11, 1898328), (12, 1740134), (19, 1099032), (22, 949164), (23, 907896), (24, 870067), (33, 632776), (38, 549516), (44, 474582), (46, 453948), (57, 366344), (66, 316388), (69, 302632), (76, 274758), (88, 237291), (92, 226974), (114, 183172), (132, 158194), (138, 151316), (152, 137379), (181, 115368), (184, 113487), (209, 99912), (228, 91586), (253, 82536), (264, 79097), (276, 75658), (362, 57684), (418, 49956), (437, 47784), (456, 45793), (506, 41268), (543, 38456), (552, 37829), (627, 33304), (724, 28842), (759, 27512), (836, 24978), (874, 23892), (1012, 20634), (1086, 19228), (1254, 16652), (1311, 15928), (1448, 14421), (1518, 13756), (1672, 12489), (1748, 11946), (1991, 10488), (2024, 10317), (2172, 9614), (2508, 8326), (2622, 7964), (3036, 6878), (3439, 6072), (3496, 5973), (3982, 5244), (4163, 5016), (4344, 4807)]