818971390

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{625169}}^1$

素因数の和:625307

約数の個数: 16

約数和(自身を含む): 1485403920

約数和(自身を除く): 666432530

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 625169, 1250338, 3125845, 6251690, 81897139, 163794278, 409485695, 818971390]

約数ペア:

[(1, 818971390), (2, 409485695), (5, 163794278), (10, 81897139), (131, 6251690), (262, 3125845), (655, 1250338), (1310, 625169)]