21404796

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 60060672

約数和(自身を除く): 38655876

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 71, 74, 84, 97, 111, 142, 148, 194, 213, 222, 259, 284, 291, 388, 426, 444, 497, 518, 582, 679, 777, 852, 994, 1036, 1164, 1358, 1491, 1554, 1988, 2037, 2627, 2716, 2982, 3108, 3589, 4074, 5254, 5964, 6887, 7178, 7881, 8148, 10508, 10767, 13774, 14356, 15762, 18389, 20661, 21534, 25123, 27548, 31524, 36778, 41322, 43068, 48209, 50246, 55167, 73556, 75369, 82644, 96418, 100492, 110334, 144627, 150738, 192836, 220668, 254819, 289254, 301476, 509638, 578508, 764457, 1019276, 1528914, 1783733, 3057828, 3567466, 5351199, 7134932, 10702398, 21404796]

約数ペア:

[(1, 21404796), (2, 10702398), (3, 7134932), (4, 5351199), (6, 3567466), (7, 3057828), (12, 1783733), (14, 1528914), (21, 1019276), (28, 764457), (37, 578508), (42, 509638), (71, 301476), (74, 289254), (84, 254819), (97, 220668), (111, 192836), (142, 150738), (148, 144627), (194, 110334), (213, 100492), (222, 96418), (259, 82644), (284, 75369), (291, 73556), (388, 55167), (426, 50246), (444, 48209), (497, 43068), (518, 41322), (582, 36778), (679, 31524), (777, 27548), (852, 25123), (994, 21534), (1036, 20661), (1164, 18389), (1358, 15762), (1491, 14356), (1554, 13774), (1988, 10767), (2037, 10508), (2627, 8148), (2716, 7881), (2982, 7178), (3108, 6887), (3589, 5964), (4074, 5254)]