123256280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{479}}^1\times {\mathrm{919}}^1$

素因数の和:1416

約数の個数: 64

約数和(自身を含む): 317952000

約数和(自身を除く): 194695720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 479, 919, 958, 1838, 1916, 2395, 3353, 3676, 3832, 4595, 4790, 6433, 6706, 7352, 9190, 9580, 12866, 13412, 16765, 18380, 19160, 25732, 26824, 32165, 33530, 36760, 51464, 64330, 67060, 128660, 134120, 257320, 440201, 880402, 1760804, 2201005, 3081407, 3521608, 4402010, 6162814, 8804020, 12325628, 15407035, 17608040, 24651256, 30814070, 61628140, 123256280]

約数ペア:

[(1, 123256280), (2, 61628140), (4, 30814070), (5, 24651256), (7, 17608040), (8, 15407035), (10, 12325628), (14, 8804020), (20, 6162814), (28, 4402010), (35, 3521608), (40, 3081407), (56, 2201005), (70, 1760804), (140, 880402), (280, 440201), (479, 257320), (919, 134120), (958, 128660), (1838, 67060), (1916, 64330), (2395, 51464), (3353, 36760), (3676, 33530), (3832, 32165), (4595, 26824), (4790, 25732), (6433, 19160), (6706, 18380), (7352, 16765), (9190, 13412), (9580, 12866)]