18829940

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7187}}^1$

素因数の和:7327

約数の個数: 24

約数和(自身を含む): 39850272

約数和(自身を除く): 21020332

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7187, 14374, 28748, 35935, 71870, 143740, 941497, 1882994, 3765988, 4707485, 9414970, 18829940]

約数ペア:

[(1, 18829940), (2, 9414970), (4, 4707485), (5, 3765988), (10, 1882994), (20, 941497), (131, 143740), (262, 71870), (524, 35935), (655, 28748), (1310, 14374), (2620, 7187)]