19708020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1063}}^1$

素因数の和:1181

約数の個数: 72

約数和(自身を含む): 60418176

約数和(自身を除く): 40710156

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 927, 1030, 1063, 1236, 1545, 1854, 2060, 2126, 3090, 3189, 3708, 4252, 4635, 5315, 6180, 6378, 9270, 9567, 10630, 12756, 15945, 18540, 19134, 21260, 31890, 38268, 47835, 63780, 95670, 109489, 191340, 218978, 328467, 437956, 547445, 656934, 985401, 1094890, 1313868, 1642335, 1970802, 2189780, 3284670, 3941604, 4927005, 6569340, 9854010, 19708020]

約数ペア:

[(1, 19708020), (2, 9854010), (3, 6569340), (4, 4927005), (5, 3941604), (6, 3284670), (9, 2189780), (10, 1970802), (12, 1642335), (15, 1313868), (18, 1094890), (20, 985401), (30, 656934), (36, 547445), (45, 437956), (60, 328467), (90, 218978), (103, 191340), (180, 109489), (206, 95670), (309, 63780), (412, 47835), (515, 38268), (618, 31890), (927, 21260), (1030, 19134), (1063, 18540), (1236, 15945), (1545, 12756), (1854, 10630), (2060, 9567), (2126, 9270), (3090, 6378), (3189, 6180), (3708, 5315), (4252, 4635)]