21496904

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:115

約数の個数: 128

約数和(自身を含む): 53222400

約数和(自身を除く): 31725496

約数列:

[1, 2, 4, 8, 11, 13, 19, 22, 23, 26, 38, 43, 44, 46, 52, 76, 86, 88, 92, 104, 143, 152, 172, 184, 209, 247, 253, 286, 299, 344, 418, 437, 473, 494, 506, 559, 572, 598, 817, 836, 874, 946, 988, 989, 1012, 1118, 1144, 1196, 1634, 1672, 1748, 1892, 1976, 1978, 2024, 2236, 2392, 2717, 3268, 3289, 3496, 3784, 3956, 4472, 4807, 5434, 5681, 6149, 6536, 6578, 7912, 8987, 9614, 10621, 10868, 10879, 11362, 12298, 12857, 13156, 17974, 18791, 19228, 21242, 21736, 21758, 22724, 24596, 25714, 26312, 35948, 37582, 38456, 42484, 43516, 45448, 49192, 51428, 62491, 71896, 75164, 84968, 87032, 102856, 116831, 124982, 141427, 150328, 206701, 233662, 244283, 249964, 282854, 413402, 467324, 488566, 499928, 565708, 826804, 934648, 977132, 1131416, 1653608, 1954264, 2687113, 5374226, 10748452, 21496904]

約数ペア:

[(1, 21496904), (2, 10748452), (4, 5374226), (8, 2687113), (11, 1954264), (13, 1653608), (19, 1131416), (22, 977132), (23, 934648), (26, 826804), (38, 565708), (43, 499928), (44, 488566), (46, 467324), (52, 413402), (76, 282854), (86, 249964), (88, 244283), (92, 233662), (104, 206701), (143, 150328), (152, 141427), (172, 124982), (184, 116831), (209, 102856), (247, 87032), (253, 84968), (286, 75164), (299, 71896), (344, 62491), (418, 51428), (437, 49192), (473, 45448), (494, 43516), (506, 42484), (559, 38456), (572, 37582), (598, 35948), (817, 26312), (836, 25714), (874, 24596), (946, 22724), (988, 21758), (989, 21736), (1012, 21242), (1118, 19228), (1144, 18791), (1196, 17974), (1634, 13156), (1672, 12857), (1748, 12298), (1892, 11362), (1976, 10879), (1978, 10868), (2024, 10621), (2236, 9614), (2392, 8987), (2717, 7912), (3268, 6578), (3289, 6536), (3496, 6149), (3784, 5681), (3956, 5434), (4472, 4807)]