21745122

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2055

約数の個数: 48

約数和(自身を含む): 51984000

約数和(自身を除く): 30238878

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 49, 74, 98, 111, 147, 222, 259, 294, 518, 777, 1554, 1813, 1999, 3626, 3998, 5439, 5997, 10878, 11994, 13993, 27986, 41979, 73963, 83958, 97951, 147926, 195902, 221889, 293853, 443778, 517741, 587706, 1035482, 1553223, 3106446, 3624187, 7248374, 10872561, 21745122]

約数ペア:

[(1, 21745122), (2, 10872561), (3, 7248374), (6, 3624187), (7, 3106446), (14, 1553223), (21, 1035482), (37, 587706), (42, 517741), (49, 443778), (74, 293853), (98, 221889), (111, 195902), (147, 147926), (222, 97951), (259, 83958), (294, 73963), (518, 41979), (777, 27986), (1554, 13993), (1813, 11994), (1999, 10878), (3626, 5997), (3998, 5439)]