20859816

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:139

約数の個数: 128

約数和(自身を含む): 59875200

約数和(自身を除く): 39015384

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 29, 34, 41, 43, 51, 58, 68, 82, 86, 87, 102, 116, 123, 129, 136, 164, 172, 174, 204, 232, 246, 258, 328, 344, 348, 408, 492, 493, 516, 696, 697, 731, 984, 986, 1032, 1189, 1247, 1394, 1462, 1479, 1763, 1972, 2091, 2193, 2378, 2494, 2788, 2924, 2958, 3526, 3567, 3741, 3944, 4182, 4386, 4756, 4988, 5289, 5576, 5848, 5916, 7052, 7134, 7482, 8364, 8772, 9512, 9976, 10578, 11832, 14104, 14268, 14964, 16728, 17544, 20213, 21156, 21199, 28536, 29928, 29971, 40426, 42312, 42398, 51127, 59942, 60639, 63597, 80852, 84796, 89913, 102254, 119884, 121278, 127194, 153381, 161704, 169592, 179826, 204508, 239768, 242556, 254388, 306762, 359652, 409016, 485112, 508776, 613524, 719304, 869159, 1227048, 1738318, 2607477, 3476636, 5214954, 6953272, 10429908, 20859816]

約数ペア:

[(1, 20859816), (2, 10429908), (3, 6953272), (4, 5214954), (6, 3476636), (8, 2607477), (12, 1738318), (17, 1227048), (24, 869159), (29, 719304), (34, 613524), (41, 508776), (43, 485112), (51, 409016), (58, 359652), (68, 306762), (82, 254388), (86, 242556), (87, 239768), (102, 204508), (116, 179826), (123, 169592), (129, 161704), (136, 153381), (164, 127194), (172, 121278), (174, 119884), (204, 102254), (232, 89913), (246, 84796), (258, 80852), (328, 63597), (344, 60639), (348, 59942), (408, 51127), (492, 42398), (493, 42312), (516, 40426), (696, 29971), (697, 29928), (731, 28536), (984, 21199), (986, 21156), (1032, 20213), (1189, 17544), (1247, 16728), (1394, 14964), (1462, 14268), (1479, 14104), (1763, 11832), (1972, 10578), (2091, 9976), (2193, 9512), (2378, 8772), (2494, 8364), (2788, 7482), (2924, 7134), (2958, 7052), (3526, 5916), (3567, 5848), (3741, 5576), (3944, 5289), (4182, 4988), (4386, 4756)]