19711972

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{359}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 21656348

約数列:

[1, 2, 4, 7, 14, 28, 37, 53, 74, 106, 148, 212, 259, 359, 371, 518, 718, 742, 1036, 1436, 1484, 1961, 2513, 3922, 5026, 7844, 10052, 13283, 13727, 19027, 26566, 27454, 38054, 53132, 54908, 76108, 92981, 133189, 185962, 266378, 371924, 532756, 703999, 1407998, 2815996, 4927993, 9855986, 19711972]

約数ペア:

[(1, 19711972), (2, 9855986), (4, 4927993), (7, 2815996), (14, 1407998), (28, 703999), (37, 532756), (53, 371924), (74, 266378), (106, 185962), (148, 133189), (212, 92981), (259, 76108), (359, 54908), (371, 53132), (518, 38054), (718, 27454), (742, 26566), (1036, 19027), (1436, 13727), (1484, 13283), (1961, 10052), (2513, 7844), (3922, 5026)]