20504720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15077}}^1$

素因数の和:15107

約数の個数: 40

約数和(自身を含む): 50481144

約数和(自身を除く): 29976424

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15077, 30154, 60308, 75385, 120616, 150770, 241232, 256309, 301540, 512618, 603080, 1025236, 1206160, 1281545, 2050472, 2563090, 4100944, 5126180, 10252360, 20504720]

約数ペア:

[(1, 20504720), (2, 10252360), (4, 5126180), (5, 4100944), (8, 2563090), (10, 2050472), (16, 1281545), (17, 1206160), (20, 1025236), (34, 603080), (40, 512618), (68, 301540), (80, 256309), (85, 241232), (136, 150770), (170, 120616), (272, 75385), (340, 60308), (680, 30154), (1360, 15077)]