20849388520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1949}}^1\times {\mathrm{8627}}^1$

素因数の和:10618

約数の個数: 64

約数和(自身を含む): 48454848000

約数和(自身を除く): 27605459480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 1949, 3898, 7796, 8627, 9745, 15592, 17254, 19490, 34508, 38980, 43135, 60419, 69016, 77960, 86270, 120838, 172540, 241676, 267437, 302095, 345080, 483352, 534874, 604190, 1069748, 1208380, 1337185, 2139496, 2416760, 2674370, 5348740, 10697480, 16814023, 33628046, 67256092, 84070115, 134512184, 168140230, 336280460, 521234713, 672560920, 1042469426, 2084938852, 2606173565, 4169877704, 5212347130, 10424694260, 20849388520]

約数ペア:

[(1, 20849388520), (2, 10424694260), (4, 5212347130), (5, 4169877704), (8, 2606173565), (10, 2084938852), (20, 1042469426), (31, 672560920), (40, 521234713), (62, 336280460), (124, 168140230), (155, 134512184), (248, 84070115), (310, 67256092), (620, 33628046), (1240, 16814023), (1949, 10697480), (3898, 5348740), (7796, 2674370), (8627, 2416760), (9745, 2139496), (15592, 1337185), (17254, 1208380), (19490, 1069748), (34508, 604190), (38980, 534874), (43135, 483352), (60419, 345080), (69016, 302095), (77960, 267437), (86270, 241676), (120838, 172540)]