25720540

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{9817}}^1$

素因数の和:9957

約数の個数: 24

約数和(自身を含む): 54430992

約数和(自身を除く): 28710452

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 9817, 19634, 39268, 49085, 98170, 196340, 1286027, 2572054, 5144108, 6430135, 12860270, 25720540]

約数ペア:

[(1, 25720540), (2, 12860270), (4, 6430135), (5, 5144108), (10, 2572054), (20, 1286027), (131, 196340), (262, 98170), (524, 49085), (655, 39268), (1310, 19634), (2620, 9817)]