199933990

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{253081}}^1$

素因数の和:253167

約数の個数: 16

約数和(自身を含む): 364438080

約数和(自身を除く): 164504090

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 253081, 506162, 1265405, 2530810, 19993399, 39986798, 99966995, 199933990]

約数ペア:

[(1, 199933990), (2, 99966995), (5, 39986798), (10, 19993399), (79, 2530810), (158, 1265405), (395, 506162), (790, 253081)]