398861281

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1\times {\mathrm{661}}^1$

素因数の和:1049

約数の個数: 32

約数和(自身を含む): 519008000

約数和(自身を除く): 120146719

約数列:

[1, 7, 13, 19, 91, 133, 247, 349, 661, 1729, 2443, 4537, 4627, 6631, 8593, 12559, 31759, 46417, 60151, 86203, 87913, 163267, 230689, 603421, 1142869, 1614823, 2998957, 4383091, 20992699, 30681637, 56980183, 398861281]

約数ペア:

[(1, 398861281), (7, 56980183), (13, 30681637), (19, 20992699), (91, 4383091), (133, 2998957), (247, 1614823), (349, 1142869), (661, 603421), (1729, 230689), (2443, 163267), (4537, 87913), (4627, 86203), (6631, 60151), (8593, 46417), (12559, 31759)]