18319895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{373}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 25850880

約数和(自身を除く): 7530985

約数列:

[1, 5, 11, 19, 47, 55, 95, 209, 235, 373, 517, 893, 1045, 1865, 2585, 4103, 4465, 7087, 9823, 17531, 20515, 35435, 49115, 77957, 87655, 192841, 333089, 389785, 964205, 1665445, 3663979, 18319895]

約数ペア:

[(1, 18319895), (5, 3663979), (11, 1665445), (19, 964205), (47, 389785), (55, 333089), (95, 192841), (209, 87655), (235, 77957), (373, 49115), (517, 35435), (893, 20515), (1045, 17531), (1865, 9823), (2585, 7087), (4103, 4465)]