640804547968

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{385098887}}^1$

素因数の和:385098914

約数の個数: 32

約数和(自身を含む): 1374803030160

約数和(自身を除く): 733998482192

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 385098887, 770197774, 1540395548, 3080791096, 5006285531, 6161582192, 10012571062, 12323164384, 20025142124, 24646328768, 40050284248, 49292657536, 80100568496, 160201136992, 320402273984, 640804547968]

約数ペア:

[(1, 640804547968), (2, 320402273984), (4, 160201136992), (8, 80100568496), (13, 49292657536), (16, 40050284248), (26, 24646328768), (32, 20025142124), (52, 12323164384), (64, 10012571062), (104, 6161582192), (128, 5006285531), (208, 3080791096), (416, 1540395548), (832, 770197774), (1664, 385098887)]