18977990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{757}}^1$

素因数の和:896

約数の個数: 32

約数和(自身を含む): 36020160

約数和(自身を除く): 17042170

約数列:

[1, 2, 5, 10, 23, 46, 109, 115, 218, 230, 545, 757, 1090, 1514, 2507, 3785, 5014, 7570, 12535, 17411, 25070, 34822, 82513, 87055, 165026, 174110, 412565, 825130, 1897799, 3795598, 9488995, 18977990]

約数ペア:

[(1, 18977990), (2, 9488995), (5, 3795598), (10, 1897799), (23, 825130), (46, 412565), (109, 174110), (115, 165026), (218, 87055), (230, 82513), (545, 34822), (757, 25070), (1090, 17411), (1514, 12535), (2507, 7570), (3785, 5014)]