28703780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{487}}^1$

素因数の和:924

約数の個数: 48

約数和(自身を含む): 69194496

約数和(自身を除く): 40490716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 421, 487, 842, 974, 1684, 1948, 2105, 2435, 2947, 3409, 4210, 4870, 5894, 6818, 8420, 9740, 11788, 13636, 14735, 17045, 29470, 34090, 58940, 68180, 205027, 410054, 820108, 1025135, 1435189, 2050270, 2870378, 4100540, 5740756, 7175945, 14351890, 28703780]

約数ペア:

[(1, 28703780), (2, 14351890), (4, 7175945), (5, 5740756), (7, 4100540), (10, 2870378), (14, 2050270), (20, 1435189), (28, 1025135), (35, 820108), (70, 410054), (140, 205027), (421, 68180), (487, 58940), (842, 34090), (974, 29470), (1684, 17045), (1948, 14735), (2105, 13636), (2435, 11788), (2947, 9740), (3409, 8420), (4210, 6818), (4870, 5894)]