21890526

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:126

約数の個数: 128

約数和(自身を含む): 58392576

約数和(自身を除く): 36502050

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 23, 31, 34, 42, 43, 46, 51, 62, 69, 86, 93, 102, 119, 129, 138, 161, 186, 217, 238, 258, 301, 322, 357, 391, 434, 483, 527, 602, 651, 713, 714, 731, 782, 903, 966, 989, 1054, 1173, 1302, 1333, 1426, 1462, 1581, 1806, 1978, 2139, 2193, 2346, 2666, 2737, 2967, 3162, 3689, 3999, 4278, 4386, 4991, 5117, 5474, 5934, 6923, 7378, 7998, 8211, 9331, 9982, 10234, 11067, 12121, 13846, 14973, 15351, 16422, 16813, 18662, 20769, 22134, 22661, 24242, 27993, 29946, 30659, 30702, 33626, 36363, 41538, 45322, 50439, 55986, 61318, 67983, 72726, 84847, 91977, 100878, 117691, 135966, 158627, 169694, 183954, 214613, 235382, 254541, 317254, 353073, 429226, 475881, 509082, 521203, 643839, 706146, 951762, 1042406, 1287678, 1563609, 3127218, 3648421, 7296842, 10945263, 21890526]

約数ペア:

[(1, 21890526), (2, 10945263), (3, 7296842), (6, 3648421), (7, 3127218), (14, 1563609), (17, 1287678), (21, 1042406), (23, 951762), (31, 706146), (34, 643839), (42, 521203), (43, 509082), (46, 475881), (51, 429226), (62, 353073), (69, 317254), (86, 254541), (93, 235382), (102, 214613), (119, 183954), (129, 169694), (138, 158627), (161, 135966), (186, 117691), (217, 100878), (238, 91977), (258, 84847), (301, 72726), (322, 67983), (357, 61318), (391, 55986), (434, 50439), (483, 45322), (527, 41538), (602, 36363), (651, 33626), (713, 30702), (714, 30659), (731, 29946), (782, 27993), (903, 24242), (966, 22661), (989, 22134), (1054, 20769), (1173, 18662), (1302, 16813), (1333, 16422), (1426, 15351), (1462, 14973), (1581, 13846), (1806, 12121), (1978, 11067), (2139, 10234), (2193, 9982), (2346, 9331), (2666, 8211), (2737, 7998), (2967, 7378), (3162, 6923), (3689, 5934), (3999, 5474), (4278, 5117), (4386, 4991)]