18789965

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{1499}}^1$

素因数の和:1636

約数の個数: 16

約数和(自身を含む): 23760000

約数和(自身を除く): 4970035

約数列:

[1, 5, 23, 109, 115, 545, 1499, 2507, 7495, 12535, 34477, 163391, 172385, 816955, 3757993, 18789965]

約数ペア:

[(1, 18789965), (5, 3757993), (23, 816955), (109, 172385), (115, 163391), (545, 34477), (1499, 12535), (2507, 7495)]