18990735

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{29443}}^1$

素因数の和:29494

約数の個数: 16

約数和(自身を含む): 31092864

約数和(自身を除く): 12102129

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 29443, 88329, 147215, 441645, 1266049, 3798147, 6330245, 18990735]

約数ペア:

[(1, 18990735), (3, 6330245), (5, 3798147), (15, 1266049), (43, 441645), (129, 147215), (215, 88329), (645, 29443)]