19910847

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{709}}^1$

素因数の和:783

約数の個数: 32

約数和(自身を含む): 31080960

約数和(自身を除く): 11170113

約数列:

[1, 3, 11, 23, 33, 37, 69, 111, 253, 407, 709, 759, 851, 1221, 2127, 2553, 7799, 9361, 16307, 23397, 26233, 28083, 48921, 78699, 179377, 288563, 538131, 603359, 865689, 1810077, 6636949, 19910847]

約数ペア:

[(1, 19910847), (3, 6636949), (11, 1810077), (23, 865689), (33, 603359), (37, 538131), (69, 288563), (111, 179377), (253, 78699), (407, 48921), (709, 28083), (759, 26233), (851, 23397), (1221, 16307), (2127, 9361), (2553, 7799)]