19900065

素因数分解:

$3^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{2903}}^1$

素因数の和:3368

約数の個数: 16

約数和(自身を含む): 31920768

約数和(自身を除く): 12020703

約数列:

[1, 3, 5, 15, 457, 1371, 2285, 2903, 6855, 8709, 14515, 43545, 1326671, 3980013, 6633355, 19900065]

約数ペア:

[(1, 19900065), (3, 6633355), (5, 3980013), (15, 1326671), (457, 43545), (1371, 14515), (2285, 8709), (2903, 6855)]