18012988

素因数分解:

$2^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{691}}^1$

素因数の和:735

約数の個数: 48

約数和(自身を含む): 38752000

約数和(自身を除く): 20739012

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 343, 532, 686, 691, 931, 1372, 1382, 1862, 2764, 3724, 4837, 6517, 9674, 13034, 13129, 19348, 26068, 26258, 33859, 52516, 67718, 91903, 135436, 183806, 237013, 367612, 474026, 643321, 948052, 1286642, 2573284, 4503247, 9006494, 18012988]

約数ペア:

[(1, 18012988), (2, 9006494), (4, 4503247), (7, 2573284), (14, 1286642), (19, 948052), (28, 643321), (38, 474026), (49, 367612), (76, 237013), (98, 183806), (133, 135436), (196, 91903), (266, 67718), (343, 52516), (532, 33859), (686, 26258), (691, 26068), (931, 19348), (1372, 13129), (1382, 13034), (1862, 9674), (2764, 6517), (3724, 4837)]