18220004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 36590400

約数和(自身を除く): 18370396

約数列:

[1, 2, 4, 11, 22, 29, 44, 58, 109, 116, 131, 218, 262, 319, 436, 524, 638, 1199, 1276, 1441, 2398, 2882, 3161, 3799, 4796, 5764, 6322, 7598, 12644, 14279, 15196, 28558, 34771, 41789, 57116, 69542, 83578, 139084, 157069, 167156, 314138, 414091, 628276, 828182, 1656364, 4555001, 9110002, 18220004]

約数ペア:

[(1, 18220004), (2, 9110002), (4, 4555001), (11, 1656364), (22, 828182), (29, 628276), (44, 414091), (58, 314138), (109, 167156), (116, 157069), (131, 139084), (218, 83578), (262, 69542), (319, 57116), (436, 41789), (524, 34771), (638, 28558), (1199, 15196), (1276, 14279), (1441, 12644), (2398, 7598), (2882, 6322), (3161, 5764), (3799, 4796)]