19419985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2741}}^1$

素因数の和:2868

約数の個数: 16

約数和(自身を含む): 25336080

約数和(自身を除く): 5916095

約数列:

[1, 5, 13, 65, 109, 545, 1417, 2741, 7085, 13705, 35633, 178165, 298769, 1493845, 3883997, 19419985]

約数ペア:

[(1, 19419985), (5, 3883997), (13, 1493845), (65, 298769), (109, 178165), (545, 35633), (1417, 13705), (2741, 7085)]