20169080

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1123}}^1$

素因数の和:1583

約数の個数: 32

約数和(自身を含む): 45522000

約数和(自身を除く): 25352920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1123, 1796, 2245, 2246, 3592, 4490, 4492, 5615, 8980, 8984, 11230, 17960, 22460, 44920, 504227, 1008454, 2016908, 2521135, 4033816, 5042270, 10084540, 20169080]

約数ペア:

[(1, 20169080), (2, 10084540), (4, 5042270), (5, 4033816), (8, 2521135), (10, 2016908), (20, 1008454), (40, 504227), (449, 44920), (898, 22460), (1123, 17960), (1796, 11230), (2245, 8984), (2246, 8980), (3592, 5615), (4490, 4492)]