17990128

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{86491}}^1$

素因数の和:86512

約数の個数: 20

約数和(自身を含む): 37537528

約数和(自身を除く): 19547400

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 86491, 172982, 345964, 691928, 1124383, 1383856, 2248766, 4497532, 8995064, 17990128]

約数ペア:

[(1, 17990128), (2, 8995064), (4, 4497532), (8, 2248766), (13, 1383856), (16, 1124383), (26, 691928), (52, 345964), (104, 172982), (208, 86491)]