20621524

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:157

約数の個数: 96

約数和(自身を含む): 48771072

約数和(自身を除く): 28149548

約数列:

[1, 2, 4, 7, 11, 14, 22, 23, 28, 41, 44, 46, 71, 77, 82, 92, 142, 154, 161, 164, 253, 284, 287, 308, 322, 451, 497, 506, 574, 644, 781, 902, 943, 994, 1012, 1148, 1562, 1633, 1771, 1804, 1886, 1988, 2911, 3124, 3157, 3266, 3542, 3772, 5467, 5822, 6314, 6532, 6601, 7084, 10373, 10934, 11431, 11644, 12628, 13202, 17963, 20377, 20746, 21868, 22862, 26404, 32021, 35926, 40754, 41492, 45724, 64042, 66953, 71852, 72611, 81508, 125741, 128084, 133906, 145222, 224147, 251482, 267812, 290444, 448294, 468671, 502964, 736483, 896588, 937342, 1472966, 1874684, 2945932, 5155381, 10310762, 20621524]

約数ペア:

[(1, 20621524), (2, 10310762), (4, 5155381), (7, 2945932), (11, 1874684), (14, 1472966), (22, 937342), (23, 896588), (28, 736483), (41, 502964), (44, 468671), (46, 448294), (71, 290444), (77, 267812), (82, 251482), (92, 224147), (142, 145222), (154, 133906), (161, 128084), (164, 125741), (253, 81508), (284, 72611), (287, 71852), (308, 66953), (322, 64042), (451, 45724), (497, 41492), (506, 40754), (574, 35926), (644, 32021), (781, 26404), (902, 22862), (943, 21868), (994, 20746), (1012, 20377), (1148, 17963), (1562, 13202), (1633, 12628), (1771, 11644), (1804, 11431), (1886, 10934), (1988, 10373), (2911, 7084), (3124, 6601), (3157, 6532), (3266, 6314), (3542, 5822), (3772, 5467)]