197313980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{90511}}^1$

素因数の和:90629

約数の個数: 24

約数和(自身を含む): 418165440

約数和(自身を除く): 220851460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 90511, 181022, 362044, 452555, 905110, 1810220, 9865699, 19731398, 39462796, 49328495, 98656990, 197313980]

約数ペア:

[(1, 197313980), (2, 98656990), (4, 49328495), (5, 39462796), (10, 19731398), (20, 9865699), (109, 1810220), (218, 905110), (436, 452555), (545, 362044), (1090, 181022), (2180, 90511)]