161020

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 345744

約数和(自身を除く): 184724

約数列:

[1, 2, 4, 5, 10, 20, 83, 97, 166, 194, 332, 388, 415, 485, 830, 970, 1660, 1940, 8051, 16102, 32204, 40255, 80510, 161020]

約数ペア:

[(1, 161020), (2, 80510), (4, 40255), (5, 32204), (10, 16102), (20, 8051), (83, 1940), (97, 1660), (166, 970), (194, 830), (332, 485), (388, 415)]