20948210

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{15991}}^1$

素因数の和:16129

約数の個数: 16

約数和(自身を含む): 37996992

約数和(自身を除く): 17048782

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 15991, 31982, 79955, 159910, 2094821, 4189642, 10474105, 20948210]

約数ペア:

[(1, 20948210), (2, 10474105), (5, 4189642), (10, 2094821), (131, 159910), (262, 79955), (655, 31982), (1310, 15991)]